![Johnny Antonelli [Gray Back] #138 1956 Topps Baseball](/api/images/junkpal-products/sports/johnny-antonelli-gray-back-138-baseball-cards-1956-topps-sport/cover.webp)
Ungraded vs PSA 10 Johnny Antonelli [Gray Back] #138 1956 Topps Baseball: price difference
Johnny Antonelli [Gray Back] #138 1956 Topps Baseball value — Ungraded $6 vs PSA 10 $1336. PSA 10 sells for 222.67× Ungraded (+22167%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 222.67× (+22167%) the Ungraded price — a $1,330 difference per card.
Grade 9 sells for 185.5× (+18450%) the Ungraded price — a $1,107 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Johnny Antonelli [Gray Back] #138 1956 Topps Baseball, the jump from Ungraded to PSA 10 is worth $1,330 (222.67×) — 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).