BOREL Mainspring 8030-Q for Felsa caliber 275 - Alloy

BOREL Mainspring 8030-Q for Felsa 275 caliber automatic movements plus perhaps similar ébauche watches, white alloy, new in envelope. I'll note that Borel indicates this is equivalent to a Bestfit 810H. See images for precise mainspring specifications and further details. 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 barely adequate job of representing the item.