Ungraded vs PSA 10 Marty Keough #334 1966 Topps Baseball: price difference
Marty Keough #334 1966 Topps Baseball value — Ungraded $3 vs PSA 10 $1920. PSA 10 sells for 640× Ungraded (+63900%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 640× (+63900%) the Ungraded price — a $1,917 difference per card.
PSA 10 sells for 32× (+3100%) the Grade 9 price — a $1,860 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Marty Keough #334 1966 Topps Baseball, the jump from Ungraded to PSA 10 is worth $1,917 (640×) — 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).