Electro Mainspring for 9L Longines caliber 9.47 - Steel

JAR Electro steel mainspring "No. 6" for 9 ligne Longines caliber 9.47 and perhaps other wrist watches too, new in envelope. See images for precise mainspring specifications. 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.