Colress's Experiment #GG59 PSA 10: price & population
PSA 10
$45.98
Raw
$3.48
PSA 10 pop
466
Gem rate
54.6%
A PSA 10 Colress's Experiment #GG59 from Crown Zenith sells for $45.98 — a 1,221% premium over the $3.48 raw price. PSA has graded this card 854 times; 466 came back a 10 (54.6% gem rate), and 291 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $14.00. The jump from 9 to 10 is worth $31.98 — that spread, times your real odds of the 10, is what decides whether grading pays.
Prices from real completed sales, updated daily. Population data from PSA's public population report.
