Switzerland, 1858, cover bearing the 1854, Sitting Helvetia 5 rp. and 10 ra. .both tied with Basel letter expedition postmark dated November 19, 1858, and routed via St. Louis on the same day, marked with a black "PD" (Poste Devoir) marking. The cover arrived in Belfort, France, on November 20, 1858, with a Belfort arrival postmark.
