Sandsteel Mainspring #5259 for Rolex 9¾ N.A. Automatic w/ brake - Steel

Sandsteel Mainspring #5259 for Rolex 9¾ N.A. automatic with brake, new in frail envelope. See images for precise mainspring specifications. This caliber is primarily found in Bubbleback cases. 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.