Berlin, 1953-1985, single franking/mixed franking, stock of approx. 450 covers, at this approx. 50 and others Reco or express, registered letters approx. 50 set or frankingses with souvenir sheets, distant high ones free marker values, mixed frankings Bund/Berlin, special issue stamps/semi-postal stamps, commerative cancel etc., main emphasis as of 1960, treasure trove