US First Flight Cover Pan Am Honolulu Hawaii to Manila 1937 US Scott c21 c7 Map.

This is a rare US First Flight Cover Pan Am Honolulu Hawaii to Manila 1937 with US Scott c21 c7 Map stamps. The cover is postmarked with a Machine Cancel and is in Uncertified condition. The cover commemorates the event of the First Flight and features an Aviation theme. The colorful Multi-Color stamp design adds a beautiful touch to this collectible item. The cover is from United States and was issued between 1931-1940. The Denomination of the stamp is 20 Cent.