Hermle Spring & Barrel #40
Frankenmuth Clock Company
SKU: HBC40
HBC40 - Spring and Barrel for Hermle Movements.
Fits strike side train on 340-020, 341-020, and 341-021.
#40 would be stamped on the barrel.
Measurements of actual mainspring: 17mm x .38mm x 1100mm.
Caution on Removal.
