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Monarchy Coins | Republic | Foreign | Former Portuguese Colonies | Stamps
Rotated die error coins are one of the most recognized mint errors in Portuguese numismatics, caused by an abnormal rotation between the obverse and reverse dies during striking. This error occurs when the dies are not aligned in the standard orientation, producing coins where the reverse appears rotated in relation to the obverse, with slight, moderate or extreme rotations. These pieces are valued for their rarity, their technical relevance to the minting process and the strong interest they generate among collectors specializing in mint errors. This category includes Portuguese examples showing different degrees of die rotation, offering a representative selection of this important mint error type.
