Variety 101a

 Obverse 1.2: Lapped Die, Medium Date, Star 1 Near Rock

Reverse A.2: Lapped Die, Large O, [mm C,H], Rim Die Cracks U(NIT)ED (STA)TES AME(R)IC(A)


Obverse 1.2                                                Reverse A.2


Obverse Diagnostic Point(s)                    Reverse Diagnostic Point(s)



Comments: During a later die state, Obverse 1 shows reduced details, in particular a weak date. I suspect that Obverse 1 and Reverse A were lapped causing the degradation in both obverse date punch depth and reverse legend and denomination strength.

During this later die state, Reverse A is worn and shows significant die cracking. Die cracks are seen from rim through AME(R)IC(A) to wreath. There are other die cracks from rim to (STA)TES, but they are less obvious on the plate coin.

Use the weak date punch and the Large O mintmark as quick diagnostics to identify Variety 101a. This later die state is more available than Variety 101, the earlier die state prior to the dies being lapped.

Plate Coin: G. Fortin Collection, PCGS AU58

1840-O Varieties 101, 101a, 102, 102a, 103, 103a, 104, 104a, 105, 106, 106a, 107, 108, 109, 109a, 110, 110a, 111

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