This is a new old stock over-ride switch for 1957 Chev passenger cars with 12 Volt Electrovac (Electro-Vac) vacuum booster pump , part of a EV 12 Vacuum Booster Pump Kit For Windshield Wipers etc. This is not a reproduction! I do not have the box! The item "57 Chevy NOS TRICO Electrovac Override Switch 12v Tan Knob Vacuum Booster FUELIE" is in sale since Sunday, April 11, 2021.This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Interior\Switches & Controls". The seller is "tillyfour" and is located in Rockford, Illinois. This item can be shipped worldwide.