HR Mainspring #503 for Omega T17, Aurore 19, AS 962 - Steel

HR mainspring #503 for Omega caliber T17, Aurore caliber 19 and AS caliber 962 plus likely several others, steel, 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.