Quarter Century Secret Rare

Mathematician (Quarter Century Secret Rare) Quarter Century Stampede #RA04-EN223

Card #RA04-EN223

Market value · ungraded

$6.38

▲ 26.8% · 30d

PSA 10

$67

11× raw

Blended from live market data · graded from real sold data
Confidence medium · How we price →

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Mathematician (Quarter Century Secret Rare) is a Quarter Century Secret Rare Yu-Gi-Oh! card from Quarter Century Stampede (#RA04-EN223). Its current blended market value is $6.38 ungraded, with a PSA 10 worth around $67. Prices update from real market data.

Graded prices

Ungraded (raw)$6.38

PSA graded price estimates by grade
Grade	Relative value	Price
PSA 10		$67$67–$67
PSA 9		$30$30–$30

“Sold” = median of real recent sold listings at that grade (eBay or Fanatics Collect — hover a badge to see which). Other figures are blended marketplace estimates. Confidence reflects source backing and price spread — not PSA-official values.

Available to buy nowLive on eBay

Card details

Set: Quarter Century Stampede
Number: #RA04-EN223
Rarity: Quarter Century Secret Rare
Game: Yu-Gi-Oh!

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Where to buy & check prices

Check recent sold prices

eBay sold

Frequently asked questions

How much is Mathematician (Quarter Century Secret Rare) worth?

Mathematician (Quarter Century Secret Rare) (Quarter Century Stampede #RA04-EN223) is worth around $6.38 ungraded, or about $67 in PSA 10, based on live Yu-Gi-Oh! market data.

What is a PSA 10 Mathematician (Quarter Century Secret Rare) worth?

A PSA 10 Mathematician (Quarter Century Secret Rare) sells for around $67, roughly 11× the ungraded price.

Where can I buy Mathematician (Quarter Century Secret Rare)?

You can buy Mathematician (Quarter Century Secret Rare) on TCGplayer, Cardmarket and eBay — see the live listings on this page. Always compare against the blended market value first.

What rarity is Mathematician (Quarter Century Secret Rare)?

Mathematician (Quarter Century Secret Rare) is a Quarter Century Secret Rare Yu-Gi-Oh! card from the Quarter Century Stampede set.