Robusta Mainspring No. 1207 for A. Schild caliber 340 - Steel

Robusta No. 1207 steel mainspring for A. Schild caliber 340 10½ ligne movement and perhaps others, 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.