Swisscraft Mainspring #5749 for Gruen V7 Veri-Thin - Steel

Swisscraft Mainspring No. 5749 for Gruen caliber V7 Veri-Thin plus perhaps similar ébauche watches as well, steel, new in envelope. See image 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.