Ungraded vs MS66 1990 P [PROOF] $10 American Gold Eagle: price difference
1990 P [PROOF] $10 American Gold Eagle value — Ungraded $969 vs MS66 $1122. MS66 sells for 1.16× Ungraded (+16%). Prices updated August 2026.
→ Steady
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Ungraded vs MS66
$969→$1122
MS66 sells for 1.16× (+16%) the Ungraded price — a $153 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 1990 P [PROOF] $10 American Gold Eagle, the jump from Ungraded to MS66 is worth $153 (1.16×) — 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).