THE WINDUP MECHANISM HAS A LEVER THAT HOLDS THE WHEELS IN PLACE TILL RELEASED. PLEASE SEE THE ABOVE PICTURES & ITEM DESCRIPTION FOR IMPT ADDITIONAL DETAILS. The item "MARX 1930'S ANTIQUE PRESSED STEEL WINDUP SIREN FIRE CHIEF CAR-VERY NICE" is in sale since Friday, September 6, 2019. This item is in the category "Toys & Hobbies\Vintage & Antique Toys\Wind-up Toys".The seller is "bwsilverpassion" and is located in Palmerton, Pennsylvania. This item can be shipped worldwide.