S18511

Catapult mail 19.03.1930 - local posting from Berlin 17.3.30 with 10 and 45 Pfennig Ebert postage as rare use by registered mail prepared for catapult flight and transported to the USA by normal route, letter then dated 16.4.30 with German sea postmark, excellent condition and a very rare piece, Graue K 13 b / 15 d