Switzerland, Zürich, 1850, 2½rp black & red "Wintherthur". Black rosette cancels, large margins showing portions of ornamental separations at sides, strong bright colors, Extremely Fine, a choice example of this scarce provisional issue; with 1959 A. Juliard & 2010 von der Weid certificate. Scott No. 1L5. Zumstein No. 12  SFr 4,250 ($4,815). $0 (Image)