Switzerland, Confederation, Gold Pattern 20 Francs 1871, RRRR

Switzerland, Confederation, Gold Pattern 20 Francs 1871, RRRR Varesi-634 (R4) KM-Pn17 HMZ-1225, Au mm 21 g 6,45, di eccezionale qualità, in Slab NGC PF65 (Top Pop!)