Ungraded vs MS66 1966 [FS-401] Roosevelt Dime: price difference
1966 [FS-401] Roosevelt Dime value — Ungraded $471 vs MS66 $1059. MS66 sells for 2.25× Ungraded (+125%). Prices updated September 2026.
↗ Rising · +395%
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Ungraded vs MS66
$471→$1059
MS66 sells for 2.25× (+125%) the Ungraded price — a $588 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 1966 [FS-401] Roosevelt Dime, the jump from Ungraded to MS66 is worth $588 (2.25×) — 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).