Hi,
Welcome to the forum and thanks for sharing the pictures. According to the Chipps/Oslon book, these are simply referred to as Flying Saucer Lights, circa 1935, made in Japan, with a listed value of $25 each. I often think of the 1950s as a more appropriate time frame for UFO pop culture, but the book says 1930s and the lights do have that older look. Regardless, I?m not an expert but I think these are difficult to find and desirable ? nice find!
(copying the pictures from the original post here for longevity)
