VIGOR Clock Mainspring for Junghans 40/63 Alarm No. T440.1

VIGOR Clock Mainspring for Junghans caliber 40/63 Alarm clocks, ALARM side spring, Regular tongue end, No. T440.1, steel, new in frail envelope. 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