MBA Black Diamond vs Gold Diamond: What Mike Baker's Stickers Mean, and How They Compare to PSA, BGS and CGC

Quick Facts

MBA doesn't regrade the card. It reviews a card that PSA, BGS, SGC or CGC has already graded and, if the card qualifies, puts a holographic sticker on the case just below the original label.
Bronze, Silver and Gold are measured against the grade already on the slab: the same grade, the same grade with better eye appeal, or at least half a grade higher.
Black stands on its own. It is the one tier tied to a specific MBA grade, Flawless. MBA offers its own slab for Black cards, but Black stickers on PSA, BGS and CGC slabs are still common.
PSA has nothing to compare it to. PSA stops at Gem Mint 10. BGS Black Label and CGC or SGC Pristine 10 are the nearest grades elsewhere, and none of them lines up exactly.
The fee depends on what the card is worth, from $15 up, and most of it is only charged if the card passes.
There's very little price data. The cleanest Pokémon example is one pair of PSA 10 Rayquaza VMAX Alt Art sales a day apart: $2,800 without a sticker, $3,650 with a Gold Diamond.

Two PSA 10s of the same card sit next to each other on eBay, and one is priced well above the other. The difference is a small holographic diamond on the case under the PSA label and "MBA Gold Diamond" in the title. The sticker comes from Mike Baker Authenticated, and each color has a specific meaning.

What Is MBA?

MBA Grading, Inc. is based in Tigard, Oregon. MBA's site describes Mike Baker as PSA's first employee and its Director of Grading for over a decade, grading since 1991. Sports Collectors Digest (SCD), in a June 2022 profile, reported that he started MBA with Demian Werner in August 2020.

MBA runs three services:

Diamond Crossover. Your card stays in its PSA, BGS, SGC or CGC slab and gets a sticker if it qualifies. This is where the Bronze, Silver, Gold and Black stickers come from.
Provenance Crossover. MBA photographs the original slab, then moves the card into an MBA slab.
Raw grading. MBA also grades ungraded cards, Pokémon and other TCGs included.

MBA isn't the only unfamiliar name turning up on slabs. We've also covered CCIC graded slabs from China.

The Four Diamond Tiers

SCD's 2022 profile described three tiers: Silver, Gold and Black. Bronze came later. The quotes below are from MBA's crossover grading page and the tier placards shown on it, checked 27 Oct 2026.

Images: MBA (grading.mba)

Bronze Diamond

Bronze cards are "confirmed as having an equivalent MBA grade to the previously assigned 3rd party grade." MBA agrees with the number on the label, and that is the whole claim.

Silver Diamond

Silver cards "possess superior eye appeal for the assigned technical grade." The grade itself doesn't change. MBA's Silver placard says it goes only to "the top 15% of cards in the market." That figure is MBA's, not a measured one. MBA's standards page says Silver can go on any card graded by MBA, PSA, SGC, Beckett or CGC.

Gold Diamond

A Gold card "must achieve a 0.5 technical grade increase, or higher." On a PSA 9, MBA is saying the card is at least a 9.5 by its own standard, and the report card gives the exact MBA grade. The Gold placard says MBA gives Gold to "less than 5% of the population."

MBA's own Pokémon example of a Gold is a PSA 10. On MBA's scale, half a grade above Gem Mint 10 is Pristine.

Photo: MBA (grading.mba)

Black Diamond

MBA calls Black "the only certification that corresponds to a specific technical grade, above Pristine." Its crossover page says Black cards "are crossed into a dedicated MBA Black Diamond slab." The Black placard says something softer: a Black card "can be physically crossed into an MBA Flawless slab" at any time. The same placard claims Black goes to "less than 1% of the already-scarce GEM MINT (or higher) population."

In practice, Black still turns up as a sticker on other graders' slabs. In the 2022 SCD profile, Baker said Black could go on PSA 10, SGC 10 Pristine and BGS Black Label slabs. On eBay on 27 Oct 2026 we found Black stickers on PSA 10, BGS 10 Black Label and CGC Pristine 10 slabs, including 2025 cards like Phantasmal Flames Mega Charizard X ex, so it isn't only older certifications. One Champion's Path Charizard V PSA 10 listed as "MBA Black Diamond" was asking $1,999.99. That's an asking price, not a sale.

Tier	Measured against	What MBA is saying
Bronze	The slab's grade	The grade on the slab is right
Silver	The slab's grade	Right grade, better eye appeal than most
Gold	The slab's grade	At least half a grade better
Black	MBA's own scale	Flawless, above Pristine

MBA's Grade Scale

MBA publishes its scale on its certification standards page. The top four grades:

Flawless: "no imperfections under 7x magnification," with 50/50 centering front and back. This is the grade Black Diamond certifies.
Pristine: four sharp corners and superior print quality, front centering within about 55/45 and back within 60/40.
Gem Mint 10: front within about 55/45, back within 70/30.
Mint+ 9.5: about 55/45 front and 70/30 back, with a single minor flaw allowed.

It runs down in half grades from there. MBA also uses qualifiers such as Authentic Minimum Size (AMS) and Authentic Altered (AA).

MBA has a grade above Pristine. Beckett and CGC don't. And MBA's "Pristine" isn't Beckett's or CGC's "Pristine": the word is the same, the written tolerances aren't.

How to Check a Sticker

Note the color (bronze, silver, gold or black) and make sure the listing title says the same tier.
Look it up at grading.mba/cert. Report cards are filed under the original grader and its cert number. MBA's Latias & Latios example is PSA126553694.
Match everything. Card, set, grader, cert number and tier on the report card should all match the slab. The report card also has MBA's "Heat Map," which marks the flaws behind its grade.
Check the original grader's cert too. MBA's guarantee only covers cards that can be verified in the original grader's database.

If the PSA label itself looks unfamiliar, our PSA Label Museum shows how PSA's labels have changed over the years.

MBA vs PSA, BGS and CGC

Grader	Top grade	Measured against	Nearest MBA tier
PSA	Gem Mint 10, nothing above it	Its own scale	None. Black sits above anything PSA prints
BGS	Black Label: Pristine 10 with a 10 on all four subgrades	Its own scale	Black, roughly
CGC	Pristine 10: "virtually flawless to the naked eye," 50/50 centering	Its own scale	Between MBA Pristine and Black. MBA Flawless adds the 7x magnification test
SGC	Pristine 10 (gold label, 50/50), above Gem Mint 10	Its own scale	About where CGC Pristine sits
MBA Bronze, Silver, Gold	Depends on the slab	The slab's grade	Not comparable to any single grade

Sources: Beckett's gaming grading page, CGC's grading scale, and AllVintageCards for SGC (a secondary source; SGC's own site didn't load for us).

Some detail behind the table:

PSA publishes Gem Mint 10 centering as roughly 55/45 to 60/40 on the front and 75/25 on the back. In practice 60/40 cards often come back as 9s, so treat 55/45 as the target.
Beckett puts a Gold-label Pristine 10 below Black Label.
CGC allows Gem Mint 10 up to about 55/45 front and 75/25 back. Its old Perfect 10 grade is retired, though slabs that already carry it keep it.

The table isn't a conversion chart, and shouldn't be read as one. A Gold on a PSA 9 says "better than this 9." It doesn't say "PSA 10," because PSA hasn't looked at the card again. BGS gives four subgrades and MBA gives one overall grade. "Pristine" means different tolerances at different companies.

The market reads it the same way. When Heritage sold a PSA 9 Pikachu Illustrator with a Gold Diamond in September 2026, the card was sold as a PSA 9. Heritage's TCG director described the Gold as equal to a 9.5 under MBA's standards. That's MBA's grade, not a new PSA grade.

For the full PSA, BGS and CGC breakdown, see our PSA vs BGS vs CGC comparison.

Is the MBA Premium Real?

All of the evidence we could find is anecdotal.

Rayquaza VMAX Alt Art (Evolving Skies 218/203), PSA 10. A plain copy sold for $2,800 in an eBay auction on 2 Jun 2026. A copy with a Gold Diamond sold for $3,650 in an eBay auction the next day. Bang For Your Buck TCG documented both. It's one pair of sales.
Pikachu Illustrator, PSA 9 with a Gold Diamond. It sold for US$5,000,000 at Heritage on 18 Sep 2026. Heritage's announcement said it was the only PSA 9 Illustrator with a Gold Diamond. With a card that rare, there's no way to tell how much of the price came from the sticker.
Baker's own number. In the 2022 SCD profile he said, "Our Gold sticker is running 30-plus percent of a premium." That's the founder talking, not independent data. The Rayquaza pair happens to land near it, at about 30%.

Then there's self-selection. Owners send MBA their best copies, so a sharp, well-centered card might have sold higher with or without a sticker. AllVintageCards makes this point directly.

MBA doesn't publish a pass rate, and we couldn't find a public population report on grading.mba on 27 Oct 2026, although SCD reported in 2022 that MBA was building one. The placards' "top 15%", "less than 5%" and "less than 1%" are the only population figures MBA gives, and it doesn't say how it counts them.

The closest thing to a pass rate we found is one Collectors Universe member's batch. In MBA's digital review in August and September 2025, 38 of their 62 cards came back as candidates. That's one collector, not a rate, and candidates still have to pass in hand.

The Case Against

The most detailed critique we found is from AllVintageCards (4 Jun 2026). Its main points:

The card stays in the slab. "MBA evaluates cards while they remain sealed in their slabs," so edges, where trimming usually shows, can't be fully examined. The article treats this as a limit of the method, not a knock on Baker's eye.
Incentives. MBA earns its final value fee only when it certifies a card. "Any certification service that only makes money when it approves cards has a structural incentive to approve cards."
Recourse. "MBA offers an opinion, not a warranty."
Ownership. The article cites Oregon's business registry as listing Brent Huigens of PWCC as a manager of MBA's company.

On recourse, MBA does publish a Service Guarantee on its standards page. It covers errors up to the "market value increase" from MBA's certification, as MBA's staff determine it, and pays approved claims as transferable credit toward MBA services. It excludes cards that can't be verified in the original grader's database and "differing opinions" from other companies. So if PSA later disagrees with MBA, that alone isn't a claim.

Pokémon collectors are split too. In an Elite Fourum thread from November 2025, replies lean slightly sceptical, with a sizeable minority comparing the sticker to CAC in coin collecting, where a similar sticker does carry a premium.

Should You Buy or Submit an MBA Diamond Card?

If you're buying to keep, judge the card first and the sticker second. Look at the centering, corners and surface in the photos. A Silver or Gold means one experienced grader liked the card, but you're the one who'll be looking at it.

If you're buying to flip, you'll only get the premium back if the next buyer values the sticker as much as you did. The best Pokémon evidence is one pair of sales, so pay for the sticker with that in mind.

If you're submitting, work through MBA's fees first. The Diamond Crossover service fee is $15 (about 20 business days) or $50 (about 10 business days), and it counts toward the final value fee, which is charged only if the card is certified:

Card worth $1,000 or less (by MBA's estimate): a flat $15, $20, $25 or $35, depending on the value band.
Card worth more than $1,000: $35, plus 1% (Bronze), 2% (Silver), 3% (Gold) or 4% (Black) of the value above $1,000.

A Gold on a card MBA values at $3,000 would cost $95: $35 plus 3% of $2,000. Fees checked on MBA's crossover page, 27 Oct 2026.

MBA's digital review is a cheaper first step. It screens a card from photos for $10 (about 2 business days) or $25 (within 2 hours, when available), and the fee is credited toward a later crossover order. A card flagged as a candidate still has to be sent in. MBA's FAQ says that while it's "not 100% guaranteed, the likelihood is very strong."

Before any of that, ask whether the card was worth grading in the first place. Our data-driven guide to grading and PSA profit calculator can help with that.

Check the Card, Not Just the Sticker

A sticker is someone else's opinion of the card. You can form your own before paying anyone. BankTCG doesn't read MBA stickers, but it can tell you about the card under one.

BankTCG lets you:

Measure a card's centering from a photo before you pay to grade it.
Scan for free, without an account, across 190,000+ Pokémon, Yu-Gi-Oh!, Magic and One Piece cards, with live prices.
Track your collection in the Vault, from what you paid to what it's worth now.

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FAQ

Is MBA Black Diamond better than a PSA 10?

It is a stricter written standard. Black Diamond is MBA's Flawless grade: no imperfections under 7x magnification and 50/50 centering front and back. PSA has nothing above Gem Mint 10. But Black Diamond is MBA's opinion, not PSA's, and how much buyers pay for that opinion varies from card to card.

What is the BGS equivalent of MBA Black Diamond?

The closest is BGS Black Label, a Pristine 10 with a 10 on all four subgrades. Both sit above their grader's regular top grade. They are not interchangeable: Beckett and MBA write different standards, and a Black Label slab carries no MBA certification unless MBA has reviewed it.

Is MBA grading legit?

MBA Grading, Inc. is a real company in Tigard, Oregon, run by Mike Baker, who MBA says was PSA's first employee and its Director of Grading for over a decade. Whether its opinion is worth a premium is argued both ways. Supporters point to stickered copies selling above plain ones. Critics point out that MBA reviews most cards through the slab and earns its larger fee only when it certifies.

How do I verify an MBA sticker?

Look the card up at grading.mba/cert and open its report card. The grader, cert number, card and tier should all match the slab in front of you. Then check the original grader's cert as well. If the listing photos don't show the sticker clearly, ask the seller for more.

Can an MBA sticker be removed?

MBA calls the label tamper-proof, and Mike Baker told Sports Collectors Digest in 2022 that it shreds if someone tries to peel it off. We found no independent test of that. If a slab is sold as certified and the sticker is missing or damaged, look it up before you buy.

Sources & Further Reading

On BankTCG

External