WATCH-CRAFT Mainspring 3808W for Font 28, 28-2N, 175, 186, PUW 570, Elgin 629, 790 - Alloy

WATCH-CRAFT Mainspring 3808W for Font 28, 28-2N, 175, 186, PUW 570, Elgin 629, 790 caliber movements plus many similar ébauche watches, white alloy, new in envelope. See images for precise mainspring specifications. FF 186 was the basis for a plethora of Swiss watches from the likes of Calvert & Harvel while the FF 28 was the basis for a similar number of Swiss watches from Helbros, Winton, Alpina & Dugena. I likely have several of these so the one you get may differ slightly from the images. 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 an adequate job of representing the item.