Lot
2536 
Switzerland, 1855, Sitting Helvetia ("Strubel"), 40rp yellow green, maroon silk threads, four singles, in combination with 1857, Sitting Helvetia ("Strubel"), 15rp rose, blue silk threads, two singles on 1856 folded letter to Constantinople, Turkey, all tied by diamond grid handstamps with matching "Chaux de Fonds, 16 Mai, 56" cds, reverse with "Paris A Marseille" transit and receiving postmark, Very Fine. Scott No. 29+28 Estimate $2,500 - 3,500.