Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - French Colonies - French Morocco - 1928 (April 25), Pioneer Flight postcard from Casablanca to Leningrad, franked by 4 stamps, including two air post values, Leningrad ''03.05.28'' arrival ds is alongside, F/VF and scarce real commercial item, Est. $100-$150, Sc. # C3, C7