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20,597 live listings tracked10,121 card classes11,384 confirmed salesupdated 24 min ago
1940 Superman

1940 Gum Inc Superman #18 Prison Break

1940 Gum Inc Superman #18 Prison Break
Buy it now on eBay $450.00 ›cheapest of 3 live listings on eBay
3live listings
1confirmed sales
9grades tracked

Every grade of this card

Raw and graded copies tracked side by side. Prices are asking prices and current bids; comps are confirmed sales.
GradeLiveAsking rangeLast confirmed saleEst. grade (ours)
Raw1$450.00—1.0
GMA ?0———
PSA 1 (MK)0———
PSA 1.51$1,299.00——
SGC 20———
SGC 30—$306.01 2026-10-19—
PSA 40———
PSA 51———
PSA 5.50———

Confirmed sales — all grades

DateGradePriceConfidence
2026-10-19SGC 3$306.01HIGH

Index grading notes

Estimated grades are this site’s opinion, derived from the seller’s photo and expressed on the PSA scale. Not affiliated with or endorsed by PSA; not a guarantee of any grading outcome.
Superman Gum Inc. card #18 1940 R145 PRISON BREAK card Is Tr
Estimated grade: 1 (1–1) · HIGH confidence · asking $450.00

The seller explicitly discloses trimming, and the card's edges appear unnaturally straight and sharp for a 1940 Gum Inc. issue — consistent with trimming. PSA assigns a grade of Authentic (altered) or PR-1 to trimmed cards and will not grade them numerically; for estimation purposes this maps to grade 1 (PR/FR) at best. Centering cannot be meaningfully evaluated because trimming distorts all border measurements. Corners and surface appear to show some age-appropriate wear but are irrelevant given the alteration. A trimmed card is essentially ungradeable by PSA under standard numeric grading and will be returned as Authentic-Altered if submitted.