Ungraded vs PSA 10 Steve Mingori #314 1977 Topps Baseball: price difference
Steve Mingori #314 1977 Topps Baseball value — Ungraded $1 vs PSA 10 $399. PSA 10 sells for 399× Ungraded (+39800%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 399× (+39800%) the Ungraded price — a $398 difference per card.
Grade 9 sells for 27× (+2600%) the Ungraded price — a $26 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Steve Mingori #314 1977 Topps Baseball, the jump from Ungraded to PSA 10 is worth $398 (399×) — 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).