Ungraded vs MS66 1842 O [LARGE DATE] Seated Liberty Quarter: price difference
1842 O [LARGE DATE] Seated Liberty Quarter value — Ungraded $45 vs MS66 $19290. MS66 sells for 428.67× Ungraded (+42767%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
MS66 sells for 428.67× (+42767%) the Ungraded price — a $19,245 difference per coin.
MS62 sells for 40× (+3900%) the Ungraded price — a $1,755 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 1842 O [LARGE DATE] Seated Liberty Quarter, the jump from Ungraded to MS66 is worth $19,245 (428.67×) — 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).