Vigor TONGUE End Clock Mainspring - 29 x 1 x 33½" Long - T 380.4

Vigor Clock Mainspring, TONGUE End – Dennison 29 x 1 x 33½" in Length, P/N T 380.4, steel, new in sealed package and 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 is hard to find watch & clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item.