Excelsior #2898 ALARM Mainspring for Looping Clock Model 12/13 - Steel

Excelsior No. 2898 ALARM side Mainspring for Looping Model 12/13 Travel Clocks the 1930's and beyond. Could also very well fit in other travel & Alarm clocks. See image for precise mainspring characteristics. I likely have several of these so the one you get may differ slighty from the images. I specialize is hard to find watch & clock parts and all parts are unconditionally guaranteed. Images do a suitable job of representing the item.