Mainspring for B-Uhr ALS Lange Glashutte Kal. 48 + 48.1
Real S-shape
Swiss manufacturer
Original dimensions
From modern production - no questionable aged stock!
Width: 3.50
Strength: 0.20
Length: 610
Diameter: 19.5
This spring with the original dimensions is difficult or impossible to obtain in stores.
If you buy 2 springs, I will add another one free of charge!