RR-, Kingdom of Poland, 5 fenig 1917 FF, DESTRUKT - DOUBLE DIE obverse

A rare variety with a doubled obverse. In collections of coins of the last century, struck by machine in large numbers, it is not the quantity of coins that indicates the quality of the collection, but the number of gems in it. There is no higher class of pearls than low-volume SAMPLES, and even rarer to them, created by accident, interesting minting errors (offsets, reverses).