How to Read Coin Grades

Two coins from the same year and mint can differ in price by a factor of ten or more — condition alone drives the gap. The 1893-S Morgan Dollar illustrates this vividly: a circulated example (VG) trades around ¥1.5M, while an MS-65 certified specimen can exceed ¥30M. Same coin, different grade, an order-of-magnitude price difference.

Grading is the act of quantifying condition by an impartial third party. The numeric score a grading service seals inside a plastic slab becomes the universal measuring stick used by dealers, collectors, and auction houses worldwide — a shared language that transcends borders and eras.

Price spread (same coin)

Up to 20×

VG vs MS-65

Certified lots

80%+

Our auction inventory

Authenticity guarantee

Lifetime

Certified slabs

Grades divide into Proof (specially manufactured) and Business Strike (circulation manufactured), the latter subdivided by degree of wear. Here are the major tiers.

• 01PFProofPF-60 – PF-70

  Struck with specially polished dies for commemorative and presentation coins. Characterized by mirror-like fields and frosted devices. Also called "Proof coins."

  1–70
• 02MSMint StateMS-60 – MS-70

  Never circulated, preserving condition from the moment of minting. MS-60 is the lowest Mint State grade with visible contact and bag marks; MS-70 is perfect — flawless even under a microscope.

  1–70
• 03AUAbout UncirculatedAU-50 – AU-58

  Slight wear on the highest design points, but retaining most original mint luster. An AU-58 is virtually indistinguishable from an uncirculated coin.

  1–70
• 04EF/XFExtremely FineEF-40 – EF-45

  The full design is sharp with only light wear. Fine details such as hair strands and feather outlines remain fully legible.

  1–70
• 05VFVery FineVF-20 – VF-35

  Major design elements are clear, but fine details (hair, feathers) show evident wear. Signs of circulation are apparent, yet overall legibility is good.

  1–70
• 06FFineF-12 – F-15

  The design overall is worn, but major details — rim lettering, legends, and date — remain legible. A popular grade for collectors seeking affordable antique coins.

  1–70
• 07GGoodG-4 – G-6

  The design outline is barely retained and interior details are mostly flattened. Date and mint mark are just distinguishable. Rare key-date coins in this grade can still command significant premiums.

  1–70
• 08PPoorP-1

  The lowest grade — the coin is identifiable as a coin and nothing more. Heavy wear, corrosion, or holes have obliterated most of the design. More meaningful as historical artifacts than collectibles; extremely rare at auction.

  1–70

Third-Party Grading (TPG) services exist worldwide, but the four listed below command broad market confidence. Each has its own evaluation tendencies — strictness, photography quality, and slab design vary.

American numismatist William Sheldon introduced the 1–70 point scale in 1949. Originally conceived as a relative price index — "a P-1 coin costs 1 unit; an MS-70 costs 70 units" — it has since become a pure condition benchmark standardised across the industry.

The critical divide falls between below 60 (circulated) and 60 and above (Mint State). MS-60 and AU-58 are only two points apart numerically, yet market prices can differ by a factor of several — a gap that surprises first-time bidders.

A slab label contains every piece of information needed to identify a coin. Reading it correctly is the first step in authentication and valuation.

PCGS's "TrueView" is a high-resolution official imaging service shot under standardised 45-degree lighting. Images taken after encapsulation are permanently archived on PCGS CoinFacts, giving remote collectors a reliable basis for condition assessment. Rare Coin Auction includes TrueView images alongside our 4K studio photography on every eligible lot detail page.

A rational bidding process has three steps: ① confirm the grade; ② research past auction results for the same grade and coin (Price Archive, PCGS CoinFacts); ③ factor in premium elements — a CAC sticker, attractive toning, or distinguished provenance. "MS-66 beats MS-65" is an oversimplification; the actual price spread between grades varies enormously by coin type, date, and mint mark.

Grading is not infallible. The same coin can receive a different grade on resubmission — a practice collectors call "cracking out." Human judgment means some variance is unavoidable. The numeric grade is a starting point, not a final verdict.

First-time participants are encouraged to consult our price archive for historical results on comparable coins, set a firm ceiling before bidding, and use that ceiling as a discipline against the heat of a live room. Learning to read grades is the collector's first rite of passage — explore our glossary and attend a live auction to train your eye.