Heinrich Köhler 384 Auction – Day 2 Single Lots & Airmail and Zeppelin Mail – inclusive the collection of the Sieger family

1894, 2½ d. blue, tied by red cds. "OLD CALABAR" to O.H.M.S envelope to Wien, addressed to an officer of the botanical museum, transit red cds. "PAID LIVERPOOL 19 FE 96", arrival cds. "WIEN 22.2.96"; a couple of short perfs and some casual toning, still fine