Ungraded vs PSA 10 Bob Robertson #540 1974 Topps Baseball: price difference
Bob Robertson #540 1974 Topps Baseball value — Ungraded $2 vs PSA 10 $527. PSA 10 sells for 263.5× Ungraded (+26250%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 263.5× (+26250%) the Ungraded price — a $525 difference per card.
PSA 10 sells for 21.08× (+2008%) the Grade 9 price — a $502 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Bob Robertson #540 1974 Topps Baseball, the jump from Ungraded to PSA 10 is worth $525 (263.5×) — 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).