Ungraded vs MS66 1958 [PROOF] Washington Quarter: price difference
1958 [PROOF] Washington Quarter value — Ungraded $17 vs MS66 $98. MS66 sells for 5.76× Ungraded (+476%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
MS66 sells for 5.76× (+476%) the Ungraded price — a $81 difference per coin.
MS62 sells for 2.71× (+171%) the Ungraded price — a $29 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 1958 [PROOF] Washington Quarter, the jump from Ungraded to MS66 is worth $81 (5.76×) — 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).