Ungraded vs PSA 10 Bill Skowron #590 1966 Topps Baseball: price difference
Bill Skowron #590 1966 Topps Baseball value — Ungraded $31 vs PSA 10 $1600. PSA 10 sells for 51.61× Ungraded (+5061%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 51.61× (+5061%) the Ungraded price — a $1,569 difference per card.
Grade 9 sells for 7.45× (+645%) the Ungraded price — a $200 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Bill Skowron #590 1966 Topps Baseball, the jump from Ungraded to PSA 10 is worth $1,569 (51.61×) — if your copy grades at the top, that premium can cover the fee. A grade below the top one changes the math, so run your exact numbers first.
Run the grading break-even math →Values are estimates from real sales data — not appraisals or offers. Some links earn JunkPal a commission at no cost to you (disclosure).