Weimar Republic Semi-Official Airmails Regensburg Easter Flight Days MiNr. 15 MiNr. 16 These stamps were issued on 12 April 1925 for the Regensburger Osterflugtage (Regensburg Easter Flight Days). Set Date(s) 12 April 1925 Watermark(s) None Album Page(s) Regensburg Easter Flight Days MiNr. 15 MiNr. 16 These stamps were issued on 12 April 1925 for the Regensburger Osterflugtage (Regensburg Easter Flight Days). Set Date(s) 12 April 1925 Watermark(s) None Album Page(s)