Pfennig Pfennig The pfennig (; pfennigs or ; symbol Pf. or ₰) or penny is a former German coin or note, which was official currency from the 9th century until the introduction of the euro in 2002. While a valuable coin during the Middle Ages, it lost its value through the years and was the minor coin of the Mark currencies in the German Reich, West and East Germany, and the reunified Germany until the introduction of the euro. Pfennig was also the name of the subunit of the Danzig mark (1922–1923) and the Danzig gulden (1923–1939) in the Free City
Slug (coin) to differentiate them. Many machines simply had the pound slot disabled with a riveted plate. Many coin-operated machines in Germany would accept the 1992, 1993 and 1995 stampings of the cupronickel Estonian 1 kroon coin as a German 1 mark coin. This was profitable for users of the Estonian coins as the kroon was pegged to the mark at a fixed rate of 8:1. All cupronickel 1 kroon coins were demonetized in May 1998 and the replacement aluminium-bronze Estonian 1 kroon coin was not interchangeable with the German mark in coin-operated machines. The use of 100-won coins for the slug