USA First Day Cover (FDC) #C39a - 6c Booklet

6c Air Mail Booklet
Nov. 18, 1949
DC --- but this one is postmarked NY



First Issued in sheets of 100 stamps, Jan. 18, 1949
Then in vertical coils Aug. 25, 1949.
The 6 ct Air mail stamp was issued in booklets of
twelve-stamps (two panes of six) on November 18, 1949.