Ungraded vs MS66 2021 S [PROOF] Washington Quarter: price difference
2021 S [PROOF] Washington Quarter value — Ungraded $22 vs MS66 $40. MS66 sells for 1.82× Ungraded (+82%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Ungraded vs MS66
$22→$40
MS66 sells for 1.82× (+82%) the Ungraded price — a $18 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 2021 S [PROOF] Washington Quarter, the jump from Ungraded to MS66 is worth $18 (1.82×) — at today's prices that doesn't cover the fee — grading this one is for the collection, not the flip. 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).