General postal service ( 3. Planned trip), inner envelope the 1. Weight step to the USA, franked with 20 penny, large Back stamp, submersible stamp from 2.1.17 and censorship stamp" double beam" as well so far unknown and extraordinary reimbursement cancel over 200 Pf. In Frankfurt (Main), good condition, seeming unique, Michel / Geissler 450.- ++ ++