Marco Mainspring #2870 for AS 635, 806, Font 252 - Steel

Marco Mainspring No. 2870 for AS caliber 635, 806 and Font caliber 252 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.