BESTFIT Alarm Clock Mainspring - 26 x 0 x 48" Long - T350-4

Bestfit System #77 Alarm Clock Mainspring, Regular Tongue End – Dennison 26 x 0 x 48" in Length, P/N T350-4, steel, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images.  I specialize in hard to find watch & clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item.