WATCH-CRAFT Mainspring 3151W for Kurth 17.11, 17.12, Blancpain 49 - Alloy

WATCH-CRAFT Mainspring 3151W for Kurth caliber 17.11, 17.12, Blancpain caliber 49 movements, plus perhaps similar ébauche watches, 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.