The Philmore Galena Crystal Radio was made in the 1940's to 50's; in USA, by the Philmore Manufacturing Company Pioneers in electronics since 1921 in Richmond Hill, New York. It has a coiled phosphorous cats whisker that adjusts easily on the Germanium mounted Galena crystal; and has a glass dome cover so that it stays where it is set. Crystal radios costs nothing to operate, gives constant service indefinitely, with clear reception and no static. There are also no battery needed, and no electricity needed. With a 150 foot to 200 foot long antenna it can have up to 300 miles receiving range. This Philmore Galena Crystal Radio receives 4 radio stations.
The Philmore crystal radio set is made of brushed sheet metal.
The Germanium mounted Galina is very shiny.
How A Crystal Radio Works for Beginners - midnightscience.com