Ungraded vs MS66 2020 S [Maryland Reverse Proof] American Innovation Dollar: price difference
2020 S [Maryland Reverse Proof] American Innovation Dollar value — Ungraded $80 vs MS66 $32. Ungraded sells for 2.5× MS66 (+150%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Ungraded sells for 2.5× (+150%) the MS66 price — a $48 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 2020 S [Maryland Reverse Proof] American Innovation Dollar, the jump from MS66 to Ungraded is worth $48 (2.5×) — 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).