Ungraded vs MS66 1842 O Seated Liberty Quarter: price difference
1842 O Seated Liberty Quarter value — Ungraded $58 vs MS66 $16201. MS66 sells for 279.33× Ungraded (+27833%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
MS66 sells for 279.33× (+27833%) the Ungraded price — a $16,143 difference per coin.
MS62 sells for 22.81× (+2181%) the Ungraded price — a $1,265 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 1842 O Seated Liberty Quarter, the jump from Ungraded to MS66 is worth $16,143 (279.33×) — 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).