The stamping is hard to read through the crackly silver paint... PS: I'm loading up a BUNCH of Guide B-31 lights in the next day or so. The item "Guide B-31 Backup Light Lamp Vintage Original GM Accessory Chevy Deere Tractor $" is in sale since Wednesday, October 7, 2020. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Lighting & Lamps\Other". The seller is "*19rich54*" and is located in Chula Vista, California. This item can be shipped worldwide.