Excelsior #2882A TIME Mainspring for Mauthe TUW 34 Alarm / Travel Clocks

Excelsior No. 2882A Mainspring for Mauthe TUW 34 based Alarm and Travel Clocks the 1930's and beyond. This is the TIME side mainspring in steel. Could also very well fit in other travel & Alarm clocks. I likely have several of these so the one you get may differ slightly from the images. Note while the mainspring is new the envelope has been handled quite a bit over the years. See image for precise mainspring characteristics.