Ostropa souvenir sheet and 5 Pfg. Stone Eagle on Catapult postal service letter with German sea mail posting DASP D. Europe 3. 8. 35 with blue special Cachet from 7. 8. and red boxed handstamp of one line "with pre-flight to Southampton" to Germany, souvenir sheet above with water spot and slight margin traces, otherwise superb, very scarce use!