1 Groschen (2) and + Groschen large shield as correctly franked 2 + Gr. Franking on cover the 1. Weight step from "Constantinopel 1/5 74" on cover to Berlin with on the back arrivals stamp from 6.5.74, postal route "via Varna" regular passing through, except small lack at the + Groschen stamp in perfect condition, photo expertize Steuer BPP (2018)