Holon Research Tower PSA Pop Report
As of Nov 8, 2026, PSA has graded 19,820 Holon Research Tower cards across 145 printings; 6,855 of them (34.6%) are PSA 10. The most graded is Umbreon δ #69 (1st Edition) with 1,142 copies.
Population is the number of copies PSA has graded at each grade. Growth is the fitted yearly rate of new PSA slabs for each printing; “No new slabs” means none were added over the tracked window. Prices for every Holon Research Tower card →