1925, Sail flights at the Büchelsberg, 10 Pfg on 10 Mark on card with 5 Pfg wood-pigeon with cancellation from 5.4.1925, one-line cancel "Büchelberg" in blue as well blue framed cancel of 3 lines "with sailplane Bremen transported" alongside respectively on glider airmail stamp mounted, faultless condition, Michel 150.-