項次 494

1931 (31 May) Inauguration of International Airmail Service commemorative cover, f.w. Peking 2nd print airmail issue complete set and Junk from 1/2c to $5, tied by Peiping commemorative cds. Nice franking.

1931.5.31 國際航空郵運創辦紀念封，貼北京二版航空票全 + 帆船票自半分至5元，銷北平紀念日戳。貼票漂亮出色。