The Mint State game
Above MS-60 nothing is worn — so what separates a $60 coin from a $6,000 one? Four variables:
- Marks. Thousand-coin canvas bags made "bag marks" the series' signature affliction. Location matters more than count: the cheek is the market's obsession because it's the largest open surface. MS-63 tolerates scatter; MS-65 demands a clean cheek and fields.
- Luster. Frosty, satin or semi-prooflike — but always rotating under light. Luster broken by friction can't come back; luster stripped by dipping leaves coins bright and dead.
- Strike. Full breast feathers and sharp hair over the ear vary by mint and date (see the mints). Weak strike caps eye appeal, not the technical grade — but the market pays for both.
- Eye appeal. The tiebreaker that isn't tie-sized: at equal grade, the pretty coin can bring multiples. Toning, cameo contrast and clean focal areas all live here.
PL and DMPL
Freshly polished dies struck some business coins with mirror fields. Grading services designate PL (Prooflike) and DMPL (Deep Mirror Prooflike) by the depth of field reflectivity per their published standards — DMPL mirrors read clearly at several times PL's distance. Frosted devices over deep mirrors ("black and white" cameo) make common dates spectacular and expensive. Mirrors magnify every hairline, so DMPL grading is merciless — and raw "deep mirror" coins on auction sites deserve suspicion by default.
Proofs are a different animal
Philadelphia's small annual proof runs (typically several hundred to roughly a thousand) have mirror fields by design, struck from prepared dies on prepared planchets. Rim, edge and strike character differ from DMPLs; attribution belongs with the grading services. Proof grading runs its own ladder where hairlines dominate — the ~880-proof 1895 being the stakes at maximum.
Cleaning, damage, and "details"
The value-killers, in rough order: harsh cleaning (parallel hairlines, unnatural brightness), whizzing (wire-brushed fake luster), polishing, heavy scratches, rim knocks, tooling, and artificial toning. Certified coins with these problems come back in "details" holders at deep discounts. Original surfaces — even dark ones — are the asset. Never clean a coin; our inherited-coins guide explains why in blunter terms.
When to insist on certification
Self-grading gets you to "roughly XF" and "probably cleaned." It does not get you to MS-64 vs MS-65, PL vs DMPL, or genuine vs excellent fake. For key dates, for anything over a few hundred dollars, and for every raw "bargain" — PCGS or NGC certification, with the certification number verified against the service's own database (faked holders exist). The key-dates reference flags per-issue risk.
