PRL, 20 pennies 1972, DESTRUKT

Aluminum, weight 1.12 g (weight without shard 1.01 g), diameter 20 mm. Interesting shard. Part of the reverse was struck on a shard of aluminum that accidentally found its way between the disc and the stamp. The shard came from the rim of another coin, as evidenced by the visible, stamped letters "POLITA" (part of the word "Republic").