BESTFIT Mainspring JA209 for 12s Hamilton Factory No. 1228 - Alloy

BESTFIT Mainspring JA-209 for Hamilton 12s Movements, Factory No, 1228, alloy, 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.