Currently, the largest known number of the 1½¢ vertical coil on cover, parcel piece, or tag is: 12.

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Description: Cover containing 12 of the 1½¢ vertical coil and a 10¢ sheet stamp pays the 3¢ first class domestic rate plus the 25¢ registration fee for items with a value of less than $5.

Owner/Source: Willy Knopp

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