Ungraded vs PSA 10 Bob Robertson #255 1971 Topps Baseball: price difference
Bob Robertson #255 1971 Topps Baseball value — Ungraded $2 vs PSA 10 $1065. PSA 10 sells for 532.5× Ungraded (+53150%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 532.5× (+53150%) the Ungraded price — a $1,063 difference per card.
Grade 9 sells for 443.5× (+44250%) the Ungraded price — a $885 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Bob Robertson #255 1971 Topps Baseball, the jump from Ungraded to PSA 10 is worth $1,063 (532.5×) — 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).