This is an NOS 12V spotlight bulb in the factory box.  This bulb was used in spotlights from the 1950's and later sold by Ford, Lincoln, Mercury, GM, MoPar and other vehicle car and truck manufacturers who sold spotlights as well as Unity spotlights.  The bulb measures measures 4.4" in diameter and includes the pair of screws on the backside for attaching the wires. This bulb was tested and was in working condition. Perfect for replacing a missing or damaged bulb or one which has scratches in the glass, for a spare, or for converting one with a 6V bulb to 12V. See my eBay Store for hundreds of other Ford and Thunderbird parts including the NOS 6V and 12V clear spotlight, foglight and driving lite bulbs.  We charge actual shipping only and are always glad to combine shipping on several auctions or you would be welcome to pick them up at our shop. Thanks