Excelsior #2836 Mainspring for Alarm / Travel Clocks - 14 x 2 x 48

Excelsior No. 2836 Mainspring for Alarm and Travel Clocks the 1930's and beyond, steel, new in envelope. Made for 8-Day clocks, this could also fit in other types of clocks (and perhaps even some 8 day watches as well).  Measures a Dennison 14 x 2 x 48 - see images for further information, although I encourage you to ignore the writing that says this is a fit if cut down as cutting a mainspring down is rarely a good idea.  I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find parts so I usually have whatever you might need and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item.