Heinrich Kohler Auctions
Caucasus: Armenia, Azerbaijan, Batum, Georgia and Transcaucasia. (2019) Dr. Hans-gunther Grigoleit Collection - Wiesbadden, Germany Kohler Auction 2019
Armenia; Azerbaijan, Butam, Georgia,; Transcaucasia; Military Mail
Caucasus: Armenia, Azerbaijan, Batum, Georgia and Transcaucasia. (2019) Dr. Hans-gunther Grigoleit Collection - Wiesbadden, Germany Kohler Auction 2019
Armenia; Azerbaijan, Butam, Georgia,; Transcaucasia; Military Mail