Image #1
WORLDWIDE AIR POST STAMPS AND POSTAL HISTORY
Rocket Flights
Lot #
154 | 
| Scott # 164-65
|
1935 (March 21), Karel Roberti Katwijk aan Zee Mars "P.13" and Mercurius "P.14" two Flight covers, franked by two definitive stamps of 1/2c and 1c, tied by Katwijk date stamps, violet or blue flight cachet, each one is bearing semi-official label picturing a rocket and portrait of K. Roberti, his signatures are alongside, placed on 2 pages from a Collection, mostly VF, Est. $600-$700
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