BOREL Mainspring SA312 for 6s Hampden No. 8696- Alloy

BOREL Mainspring SA312 for Hampden 6s Movements, Factory No. 8696, T end, alloy, new in envelope. See image for precise characteristics. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find parts and all item are unconditionally guaranteed. Images do a pretty good job of representing the item.