NuTemper Mainspring No. 201G for A.S. Caliber 1023-1030 movements - Steel

NuTemper No. 201G Mainspring for A. Schild caliber 1023-1030 movements, and quite likely others. steel, 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.