de Bolé Mainspring for Hamilton 16s No. #35434 / 717041 - Alloy

de Bolé Mainspring for Hamilton 16s, No. 35434 / 717041, alloy, new in envelope. See image for further details and precise mainspring specifications. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item