Ungraded vs PSA 10 Dave Duncan #678 1970 Topps Baseball: price difference
Dave Duncan #678 1970 Topps Baseball value — Ungraded $4 vs PSA 10 $445. PSA 10 sells for 111.25× Ungraded (+11025%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 111.25× (+11025%) the Ungraded price — a $441 difference per card.
Grade 9 sells for 11× (+1000%) the Ungraded price — a $40 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Dave Duncan #678 1970 Topps Baseball, the jump from Ungraded to PSA 10 is worth $441 (111.25×) — 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).