1511100 United States Covers Airmail (Scott C4). FDC on "the Shoreham" Stationery.

8877.
C4.  FDC on "the Shoreham" Stationery.  1923.
 
c4.  8c Propeller tied by First Day Washington DC machine cancel on "the Shoreham" stationery.  Excellent condition.
Choice EF