Excelsior #2852 ALARM Mainspring for Semca Caliber 20 - Steel

Excelsior No. 2852 ALARM side Mainspring for Semca Caliber 20 Travel Clocks the 1930's and beyond. Could also very well fit in other travel & Alarm clocks. See image for precise mainspring specifications. I specialize in hard to find parts so I usually have whatever you might need and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item.