Omega Factory Mainspring for caliber 640 - Alloy

Omega Factory Mainspring (1208 means mainspring) caliber 640 & 650 movements in sealed packaging, alloy. The wonderful thing about factory mainsprings is they always fit! I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.