![Professor Juniper [1st Edition] #55 from Pokemon Japanese Thunder Knuckle](https://pokeinvest-japanese-card-images.nyc3.cdn.digitaloceanspaces.com/Thunder_Knuckle/003_Professor_Juniper_55.jpg)
Professor Juniper [1st Edition] #55 PSA 10: price & population
PSA 10
$489.08
Raw
$150.00
PSA 10 pop
168
Gem rate
39.1%
A PSA 10 Professor Juniper [1st Edition] #55 from Japanese Thunder Knuckle sells for $489.08 — a 226% premium over the $150.00 raw price. PSA has graded this card 430 times; 168 came back a 10 (39.1% gem rate), and 98 a PSA 9.
The 9-to-10 spread
PSA 9 sells for $197.32. The jump from 9 to 10 is worth $291.76 — 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.
