The classic crystal radio was an oatmeal box with some wire and a few parts. [Michael Simpson] has something very different. He found an assembled Philmore “selective” radio kit. The simple kit had a ...

Stamped: "Detector / Type A / No. W145 / DR. No. RW 50 A 133 A / W.N.Y. 1916". A three turret crystal detector with a 4-position sweep switch, two connecting screws ...