SWSH12: Silver Tempest Serperior V #7: PSA 9 vs PSA 10
SWSH12: Silver Tempest Serperior V #7 shows a modest premium between PSA 9 and PSA 10: a $4 dollar gap, with the gem mint multiplier at 1.2x. Based on the last tracked PSA 10 sale of $26.00 on Nov 18, 2025, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.
PSA 10
$27.00
Last sale $26.00 on
PSA 9
$22.95
Last sale $22.95 on
PSA 8
$9.76
Last sale $11.61 on
The Spread
The PSA 9 to PSA 10 spread on Serperior V #7 SWSH12: Silver Tempest.
$4
Dollar gap, PSA 9 to PSA 10
1.2x
PSA 10 sells for 1.2x 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
Where this card lands in the broader SWSH12: Silver Tempest picture: a holo with a $4 gap between PSA 9 and PSA 10. The PSA 9 to PSA 10 jump on WOTC-era cards reflects population scarcity at the top grade, not raw print run.
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