Marco Mainspring #3247 for AS caliber 1220, 1221, 1298, GP 13, 14 - Steel

Marco Mainspring No. 3247 for AS 1220, 1221, 1298, Girard Perregaux 13, 14 caliber movements and perhaps others, steel, new in envelope. See images for precise mainspring specifications. I specialize in 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.