WATCH-CRAFT Mainspring 2744W for Blancpain 42, Gruen 915, 916, 917, Kurth 384 - Alloy

WATCH-CRAFT Mainspring 2744W for Blancpain caliber 42, Gruen caliber 915, 916, 917, Kurth caliber 384 movements plus perhaps similar ébauche watches, white alloy, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. 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.