Ungraded vs MS66 2018 S [PROOF] Lincoln Shield Penny: price difference
2018 S [PROOF] Lincoln Shield Penny value — Ungraded $18 vs MS66 $61. MS66 sells for 3.39× Ungraded (+239%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Ungraded vs MS66
$18→$61
MS66 sells for 3.39× (+239%) the Ungraded price — a $43 difference per coin.
Should you get this coin graded?
Grading runs about $30 per coin all-in. On 2018 S [PROOF] Lincoln Shield Penny, the jump from Ungraded to MS66 is worth $43 (3.39×) — 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).