Seller: swapmonster (14,091) 99.8%, Location: Seffner, Florida, Ships to: Americas, Europe, AU, Item: 111926228945 Material: Porcelain, Details: Hello Folks, Unknown date stamp on the bottom "1920", standard size screw in socket for fuse or bulb? Measures approx. 3" x 2 3/8" x 1 1/2" high. Please see all pics. Thank you for shopping with us today, and please check out our Ebay store for other great bargains. As always, we take great care in packing your treasures, so they are shipped to you safely. PayPal is our payment method of choice.