Rezista Mainspring #288F for AS 1220, 1221 - Steel

Rezista No. 288F steel mainspring for AS 1220, 1221 caliber movements, and quite likely others, 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. plethora