Horolovar 3/4" X 0.017" X 45"

MS-19x36 - Horolovar Mainspring (19 x 36)

3/4 inches x .017 inches x 45 inches.

19mm x .43mm x 1143 x 36mm Barrel 

400 Day Anniversary Mainspring.

Designed for use in anniversary clocks but can be used in others.

High Quality. Made in Germany.