Ungraded vs PSA 10 Bob Purkey #551 1966 Topps Baseball: price difference
Bob Purkey #551 1966 Topps Baseball value — Ungraded $16 vs PSA 10 $2640. PSA 10 sells for 165× Ungraded (+16400%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 165× (+16400%) the Ungraded price — a $2,624 difference per card.
PSA 10 sells for 13.27× (+1227%) the Grade 9 price — a $2,441 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Bob Purkey #551 1966 Topps Baseball, the jump from Ungraded to PSA 10 is worth $2,624 (165×) — 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).