Samson Mainspring No. A13 for AS 1283, 1284, Mido 917A - Steel

Samson Mainspring No. A13 for AS 1283, 1284, Mido 917A caliber automatic movements plus perhaps many similar ébauche watches, steel, new in envelope. See images for precise mainspring specifications. 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 a suitable job of representing the item.