What is the starting value for an ungraded Porygon [Blue Back] #137?

An ungraded copy of Porygon [Blue Back] #137 from the Japanese Topsun set is currently valued around $16.

How much is a PSA 10 graded version worth?

A PSA 10 graded version of this Pokémon Japanese Topsun card is valued at $680.

Is the value difference between ungraded and graded significant?

Yes, the value jumps considerably, with a PSA 10 selling for $680 compared to an ungraded price of $16.

Porygon [Blue Back] #137 — Pokémon Japanese Topsun Card Value

Name: Porygon [Blue Back] #137 — Pokémon Japanese Topsun Card Value
Brand: Pokémon

Pokémon Japanese Topsun

What the Porygon [Blue Back] #137 card from Pokémon Japanese Topsun is worth — ungraded and graded (PSA 10).

Porygon [Blue Back] #137 value — Ungraded $16 · Grade 9 $81 · PSA 10 $680. Prices updated July 2026.

Set · Pokémon Japanese TopsunGame · Pokémon

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Value by grade

$16

Ungraded

5.1×

$81

Grade 9

42.5×

$680

PSA 10

Real sold prices per grade — the PSA 10 premium on this card is 42.5× raw.

Complete-in-box price history

Monthly CIB value, based on sold comps.

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Which version do you have?

For the cheapest way to own Porygon #137, purchase the Green Back version at $13. The Blue Back version commands a $3 premium, which reflects minor differences in the card's printing or perceived demand, not a significant difference in fundamental collectibility. Buyers prioritizing budget should stick with the Green Back, while those seeking the slightly more desirable Blue Back should be prepared to pay the extra amount.

VersionUsedNewBuy

Blue Back— this pagePorygon [Blue Back] #137 — Pokémon Japanese Topsun Card Value$16.27$680eBay ↗

Green BackPorygon [Green Back] #137 — Pokémon Japanese Topsun Card Value$12.5$400eBay ↗

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PriceCharting — Porygon [Blue Back] #137 (Pokémon Japanese Topsun)$16.27

Item details

Brand: Pokémon
Set: Pokémon Japanese Topsun
Game: Pokémon

Porygon [Blue Back] #137 (Pokémon Japanese Topsun) card value

An ungraded Porygon [Blue Back] #137 from Pokémon Japanese Topsun averages around $16. A Grade 9 copy runs about $81, and a PSA 10 gem-mint commands $680.

What drives the price

Centering, corners, edges, and surface decide a card's grade — and the grade decides the price. The jump from raw to PSA 10 can be 5–20×, so condition is everything. Holos, first editions, and shadowless prints carry the biggest premiums.

Price guide

Sold values by grade vs. what sellers ask today

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Condition	Value	Based on
Ungraded	$16	eBay sold comps
Grade 9	$81	eBay sold comps
PSA 10	$680	eBay sold comps

Frequently asked questions

What is the starting value for an ungraded Porygon [Blue Back] #137?: An ungraded copy of Porygon [Blue Back] #137 from the Japanese Topsun set is currently valued around $16.
How much is a PSA 10 graded version worth?: A PSA 10 graded version of this Pokémon Japanese Topsun card is valued at $680.
Is the value difference between ungraded and graded significant?: Yes, the value jumps considerably, with a PSA 10 selling for $680 compared to an ungraded price of $16.