Ungraded vs PSA 10 Mayo Smith #321 1967 Topps Baseball: price difference
Mayo Smith #321 1967 Topps Baseball value — Ungraded $2 vs PSA 10 $531. PSA 10 sells for 265.5× Ungraded (+26450%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 265.5× (+26450%) the Ungraded price — a $529 difference per card.
Grade 9 sells for 33× (+3200%) the Ungraded price — a $64 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Mayo Smith #321 1967 Topps Baseball, the jump from Ungraded to PSA 10 is worth $529 (265.5×) — 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).