HR Mainspring SA204 for 16s Hamilton No. 534B / 718050 - Alloy

HR mainspring SA204 for 16s Hamilton Motor Barrel Movements No. 534B or 718050, alloy, new in envelope. See images for further details and precise mainspring specifications. I likely have several of these so the one you receive may appear different than in 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 an adequate job of representing the item.