Marco Marshalloy Mainspring 3579M for AS 1138, 1161, ETA 1070, 1170, 2365, Record 102 - Alloy

Marco Marshalloy Mainspring 3579M for AS caliber 1138, 1161, ETA 1070, 1170, 2365, Precimax 600 & Record 102 plus perhaps other similar ébauche watches, 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 a pretty good job of representing the item.