Temp-Rite Mainspring for Hamilton 16s No. 534B - Steel

Temp-Rite Mainspring for Hamilton 16s 992B movements, Factory No. 534B, steel, new in dirty or soiled envelope. See images for further details. I likely have several of these, including ones that have had coffee spilled all over them, so the one you get may differ slightly from the images. 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.