Home Products 1512600 United States Covers (Scott c11). C11 cover collection. Over 200 FDC's, etc.
1512600 United States Covers Airmail (Scott c11)

1512600 United States Covers (Scott c11). C11 cover collection. Over 200 FDC's, etc.

9046.
C11 cover collection.  Over 200 FDC's, etc.
 
C11 cover collection.  Over 200 covers of first days, airport dedications, etc. all franked with C11.  This is the basis for a specialized collection of this popular airmail.
Extremely Fine