ZURICH, 1850, 2-1/2r Black & Red, Winterthur (1L5; Zumstein 12). Three very large margins, fourth at right cut a bit closer just up to but clearing frameline, fresh colors, just tied by light strike of Zurich rosette cancel, matching “Zurich 16 Aout 1850 Vormittag” double-ring circular datestamp on 1850 folded cover, couple of file folds not affecting stamp or markings
Signed Ritter. With 2015 Marchand certificate. Catalogue values are for the more valuable single franking. Zumstein €55,000.