Heinrich Köhler 383rd Auction – Day 2 Single Lots: Olympics, Thematics, Literature Special Catalogue: Airmail and Zeppelin Mail – inclusive the collection of the Sieger family

1 l. (5), 5 l. and 10 l. as  additional franking on postal stationery card 10 l. blue, tied by c.d.s. "PATRAS 24 JUN 96", as registered card to Athens with arrival mark. Somewhat toned at right, otherwise very fine and rare.