PM Clock ALARM Mainspring CS-214 for Kienzle Caliber 16/23 Alarm Clock

PM Packaged Material Mainspring for Kienzle Caliber 16/23 Alarm clocks, ALARM side spring, Regular Open Loop end, No. 214, 1950’s or newer, steel, new in open envelope. See image for precise mainspring specifications. I specialize is hard to find watch & clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item