PM Merelloy Mainspring M10 for Bulova 10AN, 10AE - Alloy

PM Merelloy mainspring M10 for Bulova caliber 10AN, 10AE movements and likely others, alloy, 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.