Swisscraft Mainspring No. 1895 for AS caliber 1131 - Steel

Swisscraft Mainspring No. 1895 for AS caliber 1131 plus perhaps other similar ébauche watches as well, steel, new in envelope. See image 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.