Ungraded vs MS66 1998 S [ROBERT F. KENNEDY] Modern Commemorative: price difference
1998 S [ROBERT F. KENNEDY] Modern Commemorative value — Ungraded $56 vs MS66 $1025. MS66 sells for 18.3× Ungraded (+1730%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Ungraded vs MS66
$56→$1025
MS66 sells for 18.3× (+1730%) the Ungraded price — a $969 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 1998 S [ROBERT F. KENNEDY] Modern Commemorative, the jump from Ungraded to MS66 is worth $969 (18.3×) — 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).