Watch List notes:

G Foreign Coins, Switzerland, pattern 20 francs, 1873, by Leopold Wiener, two dots, no mintmark, Helvetia seated l., in ex. HELVETIA, rev. value and date within wreath (KM.Pn24; Fr.493), certified and graded by PCGS as Specimen 64, very scarce with a wonderful obverse design and mirrored fields
Estimate: (2500-3000 GBP)