Ungraded vs Grade 6.0 Black Cat #51 (1954): price difference
Black Cat #51 (1954) value — Ungraded $158 vs Grade 6.0 $708. Grade 6.0 sells for 4.48× Ungraded (+348%). Prices updated August 2026.
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Medians of real sold listings per grade, updated August 2026 — how we compute values.
Ungraded vs Grade 6.0
$158→$708
Grade 6.0 sells for 4.48× (+348%) the Ungraded price — a $550 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Black Cat #51 (1954), the jump from Ungraded to Grade 6.0 is worth $550 (4.48×) — 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).