![Harmon Killebrew [Gray Back] #164 1956 Topps Baseball](/api/images/junkpal-products/sports/harmon-killebrew-gray-back-164-baseball-cards-1956-topps-sport/cover.webp)
Ungraded vs PSA 10 Harmon Killebrew [Gray Back] #164 1956 Topps Baseball: price difference
Harmon Killebrew [Gray Back] #164 1956 Topps Baseball value — Ungraded $43 vs PSA 10 $10016. PSA 10 sells for 232.93× Ungraded (+23193%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 232.93× (+23193%) the Ungraded price — a $9,973 difference per card.
Grade 9 sells for 139.19× (+13819%) the Ungraded price — a $5,942 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Harmon Killebrew [Gray Back] #164 1956 Topps Baseball, the jump from Ungraded to PSA 10 is worth $9,973 (232.93×) — 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).