Switzerland (Confederation). Bern. 20 Francs - commemorative issue (Silver, 32.56 mm, 21.00 g). Mintage of only 1,000 pieces. 2020. Swiss tennis player Roger Federer facing right, holding tennis racket, behind, tennis court. Rev. Swiss Cross, surmounted by inscription; below, value and mint mark between, to right, date. KM 183. In an airtight plastic bag. Proof.