Lot
665 
American Postal Machine Co., "U.S.S. Lexington, May 27, 1928", flag machine cancel ties 2¢ carmine on cover to Brooklyn N.Y., Very Fine example of the rarest Naval machine, Only three recorded.. Estimate $300 - 400.
Barlow record notes:
1. May 27, 1928 to Brooklyn NY (cover offered here)
2. May 27, 1928 to San Francisco Cal.
3. May 30, 1928 to Brooklyn NY.
Realized: $220