Fossil Seadra 42/62: PSA 9 vs PSA 10
The PSA 10 to PSA 9 spread on Fossil Seadra 42/62 is a wide gem-mint premium: $78, with PSA 10 copies trading at 3.9x a PSA 9. Based on the last tracked PSA 10 sale of $125.00 on Mar 26, 2026, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.
PSA 10
$105.00
Last sale $125.00 on
PSA 9
$27.00
Last sale $27.00 on
PSA 8
—
Limited recent sales tracked. Pull eBay sold comps before acting.
The Spread
The PSA 9 to PSA 10 spread on Seadra 42/62 (Fossil).
$78
Dollar gap, PSA 9 to PSA 10
3.9x
PSA 10 sells for 3.9x a PSA 9
Three-Outcome EV Calculator
15%
70%
15%
Defaults are conservative starting points. Adjust based on the specific slab. A borderline 9 with strong centering plays differently than a 9 with edge wear.
PSA 10 outcome (sale price minus resub minus acquisition)
$0
PSA 9 outcome (regrade, no upgrade)
$0
PSA 8 outcome (downgrade, slower sell, tied capital)
$0
Expected Value
$0
Math favors holding the 9
Fossil 42/62 Seadra is a WOTC-era release from 1999. The gap between its PSA 9 and PSA 10 prices is $78.
Other Fossil Heavy Hitters
Track every grade tier. Spot every gap.
Real PSA prices across every grade tier. Free during beta.
Get Free Beta AccessFounding Member Cohort · Limited to the First 100 Members.