AIR POST ISSUES
cover 6c on 5c Carmine on white entire (UC23), red surcharge on basic Thorp envelope stock #5056, unused, fresh and crisp, extremely fine, ex Kessler, Scott retail $1,400.00 photo est.

Details
cover 6c on 5c Carmine on white entire (UC23), red surcharge on basic Thorp envelope stock #5056, unused, fresh and crisp, extremely fine, ex Kessler, Scott retail $1,400.00 photo est.

Lot Essay

Note: reportedly only 83 examples are known.