D. João IV, 1641, Meio Tostão (50 Réis), prata, Cruz cantonada e cercada por pon

Started by Luis Cozeto, October 11, 2022, 11:36:25 PM

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Luis Cozeto


An interesting piece. Gomes says it should be 22 mm, 4.1 gram. At 2.79 gram, your coin is significantly (32%) underweight. Assuming that both you and Gomes got the weight right, the possibilities are a) underweight flan and b) clipped coin.

The argument for clipping is the straight (filed?) edges at 1-2 and 4-5 o'clock (top picture). The argument for thin flan (or end of batch) is the diameter, that suggests the coin is about the right size.

An unidentified coin is a piece of metal. An identified coin is a piece of history.