This is a VP-10 Hawaii flight related cover. Post Marked in San Francisco upon the departure of VP-10's January 10, 11, 1934 flight commemorating that historic flight. .. This cover approximates 3 3/4" X 6 1/2". 

Currently selling my extensive collection of covers related to this historic flight. If you have been looking for such covers now is your chance to procure them!

Will combine S&H for all.