HR Nivastar Mainspring G845 for Record 435 B (Ball) 16s Pocket Watch Movements - Alloy

HR Nivastar Mainspring G845 for Record caliber 435 B, "Ball" (The Ball Company, Swiss) 16s Pocket Watch movement, white alloy, new in envelope. See image 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.