Alloy Mainspring for Caravelle 11OAC, 11OEC (AS 1686)

Unmarked Maker Swiss Mainspring for Caravelle caliber 11OAC, 110EC, AS 1686 based movements plus perhaps similar ébauche watches, GR Ref. 4203, white alloy, new in tiny envelope. This mainsprings fits a huge list of AS 1686 based movements, including (but not limited to) Elgin 823, 824 and Hamilton 653, 657. I listed it as Caravelle because it came from a Bulova / Caravelle parts supply. 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.