NEWALL Mainspring #1791N for Bulova 7ADC, 7ALC, 7AMC, 7ASC, 7AWC, 7BSC, 7BUC, 7WMC, 7WSC - Alloy

Newall Mainspring #1791N for Bulova caliber 7ADC, 7ALC, 7AMC, 7ASC, 7AWC, 7BSC, 7BUC, 7WMC, 7WSC movements plus perhaps many more similar ébauche movements, GR Ref 4427, white alloy, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ 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 pretty good job of representing the item.