Newall Security Mainspring #169 for Lanco 1243, 1244-1, Bulova 10B, Brac 903, 2003 - Steel

Newall Security Mainspring #169 for Langendorf (Lanco) 1243, 1244-1, Bulova 10B, Brac 903, 2003 caliber movements plus perhaps other similar ébauche movements as well, 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.