Ungraded vs PSA 10 Harmon Killebrew #120 1966 Topps Baseball: price difference
Harmon Killebrew #120 1966 Topps Baseball value — Ungraded $7 vs PSA 10 $28800. PSA 10 sells for 4,114.29× Ungraded (+411329%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 4,114.29× (+411329%) the Ungraded price — a $28,793 difference per card.
Grade 9 sells for 115.71× (+11471%) the Ungraded price — a $803 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Harmon Killebrew #120 1966 Topps Baseball, the jump from Ungraded to PSA 10 is worth $28,793 (4,114.29×) — 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).