1957 airmail letter to Tokyo, with Mi.400 and 407, special postmark OSLO/ 24.FEB.1957, first flight Copenhagen - Tokio through/over North Pole, arrival TOKYO/ JAPAN/ 26.II.57 at the back, nedoručená mailing returned recipient - see CDS TOKYO/ 11.V.57 in front, preserved In cat.: Philately / Europe / Norway, U:A5 | AUTOTRANS (?) | Translation request | Recommend | Ask about item | Report of possible forgery