BESTFIT Clock Mainspring for Kienzle 16/23 Alarm No. L300-2

Bestfit System #77 Clock Mainspring for Kienzle 16/23 Alarm clocks, ALARM side spring, OPEN LOOP end, No. L300-2, 1940's or newer, steel. See images 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