Here's a railroad signal relay in excellent condition......thick glass base which has no damage, a few bubbles here and there for character.....not sure if this works but from the looks of it, I would say that it does....everything appears to be there. There's a sticker on the inside that has hand written on it "TESTED 11-24-52". Comes with a spring loaded plate that protected it from the vibration of passing trains. $20 + shipping....e-mail with any questions and thanks for looking.