1 Mark on 10 penny airmail with overprint "Gelber Hund", perfectly mint never hinged and having very fresh colours, unsigned with photo certificate Michael Jaeschke Lantelme BPP "fresh colours, very well perforated. In faultless, mint never hinged condition. ", Michel 2.500.- we obtained for a comparable copy in of our 186. Auction 1.400.- Euro as well percentage of bid price!