Worldwide Stamps and Covers Switzerland Swiss Federal Post Switzerland - sem
Sale No: 3063
Lot No:1527
Symbol:mint
Cat No:Zumstein I-V
Zumstein I-V, VII, X-XI, 1913 Pioneer Airmails, fresh colors, all original gum with some lightly hinged, VII small defects and XI stained, otherwise fine to very fine(Zumstein CHF3,350) (Image)