Marco Marshalloy Mainspring 3409M for Movado 365, MST 474 - Alloy

Marco Marshalloy Mainspring 3409M for Movado 365, MST 474 caliber movements, alloy, new in envelope. See images for precise mainspring specifications and further details. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.