I picked this up in an Olympia antique store several years ago. I haven't seen anything like it, and was wondering if any of you go-with experts could help me out. It's base measures 1 7/8" diameter, it's ears measure 2 7/8" across, and it stands 1 3/4" tall. Silvertone logo is embossed across the top, no other markings. It has a thin metal pin almost 1 3/4" long that slides freely up and down the center hole. I hope the pics turn out OK. Thanks for any help!