Alloy Mainspring for Hamilton 675, Venus 230, 231, 232, Helvetia 64

Unmarked Maker Swiss Mainspring for Hamilton grade 675, Helvetia (General) caliber 64, Venus caliber 230, 231, 232 movements plus perhaps similar ébauche watches, GR Ref. 4565, white 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.