Westclox Factory TIME Mainspring for Big Ben Clock Model A2

Westclox Factory TIME Mainspring for Big Ben - Except Chime Alarm - Model A2 Clocks from the 1930's and 1940's (and perhaps beyond), new in dusty and/or torn envelope. Could also very well fit in other alarm and travel clocks as well. Original Factory Number is 651-6 and it is worth noting as well these will need a very thorough cleaning before use. I likely have several of these so the one you get may differ slightly from the images. I sell a reprint of the factory parts and assembly catalog for this model of Alarm Clock if you need it, just check my other listings. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a suitable job of representing the item.