Ungraded vs PSA 10 Dave Duncan #178 1971 Topps Baseball: price difference
Dave Duncan #178 1971 Topps Baseball value — Ungraded $2 vs PSA 10 $227. PSA 10 sells for 113.5× Ungraded (+11250%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 113.5× (+11250%) the Ungraded price — a $225 difference per card.
Grade 9 sells for 20× (+1900%) the Ungraded price — a $38 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Dave Duncan #178 1971 Topps Baseball, the jump from Ungraded to PSA 10 is worth $225 (113.5×) — 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).