Hamilton Factory Dynavar Mainspring for 6/0 No. 27434 - Alloy

Hamilton Factory Dynavar Mainspring for 6/0s Movements, Factory No. 27434, alloy, new in envelope. See images for precise mainspring specifications. 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 satisfactory job of representing the item.