NOS Security Brand Swiss Mainspring Bracelet Watches #1162 Dennison 1, 13, 10.5

NOS Security Brand Swiss Mainspring Bracelet Watches #1162 Dennison 1, 13, 10.5 The mainspring is new old stock and being sold for parts as is. It is from a watchmaker estate. There is a stain on the package. Dennison: W-1, S-13, L-10.5 Made in Switzerland

eBay