Ungraded vs MS66 2021 S [FIRST PUBLIC UNIVERSITY PROOF] American Innovation Dollar: price difference
2021 S [FIRST PUBLIC UNIVERSITY PROOF] American Innovation Dollar value — Ungraded $20 vs MS66 $59. MS66 sells for 2.95× Ungraded (+195%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
MS66 sells for 2.95× (+195%) the Ungraded price — a $39 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 2021 S [FIRST PUBLIC UNIVERSITY PROOF] American Innovation Dollar, the jump from Ungraded to MS66 is worth $39 (2.95×) — 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).