Nivaflex Mainspring for Font 60, AS 970 + likely many others - Alloy

Robusta Nivaflex Mainspring 12530 for Font 60, AS 970 caliber movements, plus perhaps similar ébauche watches, white alloy, new in envelope. See image for precise characteristics. I specialize is 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.