Germany Reich. Air mail cover Michel 309Wa , Air mail letter, sent from Munich to KRISTIANIA (Oslo, Norway) 2 Oct 1923, franked with 5 x Mi 323AP (correctly franked with 6 mRM for a letter to a foreign destination and 4 mRM add for air mail during the period 1.10-9.10 1923). Transit cds Berlin Luftpost 4.10 and arrival cds Kristiania 6.10 on the reverse side of the cover.