Watch List notes:

World Coins, Switzerland, pattern 20 francs, 1873, two dots and mintmark, Helvetia seated l., in ex. HELVETIA, rev. value and date within wreath (KM.Pn26; Fr.494; Richter 2-72 [R1]), certified and graded by PCGS as Specimen 64
(5000-6000 GBP)