Federal Republic of Germany "20 Mark" Pattern Proof Coin / Medallion. Obverse: Berlin Coat of Arms, Rampant Bear. This is a modern proof pattern coin made to the same specifications as the old 20 Mark gold coins 7.965 grams. The medallion looks like it is ex-jewelry.It has been cleaned and has some minor rim damage. The medal in the pictures is the exact medal you are purchasing. Green Brook Coins is a local coin shop located in Central New Jersey.