Excelsior #2960 TIME Mainspring for Imhof Alarm / Travel Clocks

Excelsior No. 2960 Mainspring for Imhof Model Alarm and Travel Clocks the 1930's and beyond. This is the TIME side mainspring in steel and is suitable for caliber 942, 949-8 and 249 although there are better matches for the latter caliber than this mainspring. Could also very well fit in other travel & Alarm clocks. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. Images do a suitable job of representing the item.