Colnect-121-888-Marconi-Kemp-Experiments-1897.jpg What: stamp
Type: Great Britain postage 9/13/1972 9p multi issue=BBC 50th d=Oscillator & Spark Transmitter 1897 unwmk perf=14.75x14.25

State: mint

Visibility: public



Owner: Stan Shebs




Creation date unknown