Westclox Factory Mainspring for Travalarm and Leland Model 71 Travel Clocks

Westclox Factory Mainspring P/N SPR-3326 for Westclox Travalarm and Leland Model 71 travel clocks from the 1940's and beyond, new in envelope. Could also very well fit in other travel clocks. Needs a thorough cleaning before use. See the excerpts from the Westclox parts guide (which I conveniently sell). I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a suitable job of representing the item.