Ungraded vs PSA 10 Dave May #493 1971 Topps Baseball: price difference
Dave May #493 1971 Topps Baseball value — Ungraded $2 vs PSA 10 $350. PSA 10 sells for 175× Ungraded (+17400%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 175× (+17400%) the Ungraded price — a $348 difference per card.
Grade 9 sells for 145.5× (+14450%) the Ungraded price — a $289 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Dave May #493 1971 Topps Baseball, the jump from Ungraded to PSA 10 is worth $348 (175×) — 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).