Plymouth Ply-Power Mainspring for AS caliber 1220, 1221 - Alloy

Plymouth Ply-Power Mainspring for AS caliber 1220, 1221 movements, and perhaps others, white alloy, 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 an adequate job of representing the item.