Antique Art Deco Sterling Pendant Longorette Folding Eyeglasses Onyx Marcasite

Here for your consideration is an antique Art Deco Sterling silver pendant. The pendant is a longorette with folding eyeglasses. The pendant is not marked anywhere that I can find. It is tested for sterling silver. Even the eyeglass frame is testing for sterling. The black stones test for onyx. It weighs about 27 grams. It measures 2" long and 1 1/8" wide. The glasses measure 4" long. The eyeglasses are missing the glass pieces. The front onyx piece has two rivets holding it on and for some reason the holes are seen from the front. I am not sure if it was made this way but it looks like it is. The pendant hinges all function and the entire pendant is in great antique condition. I dont see any missing marcasite stones either.