Durilium Mainspring for Hamilton 6/0s No. 27433 - Alloy

Durilium alloy mainspring for Hamilton 6/0s movements, Factory No. 27433, 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.