Product Description: New Pocket Watch Mainspring. This is a new 12S mainspring that fits Waltham pocket watches. This mainsprings is superior quality and leads the field. The edges are rounded to reduce friction in the barrel. It is oiled before going into the package and the wrapper is chemically tested to secure freedom from moisture. This mainspring has Dennisons of 12 1/2 X 7 X19 1/2.
Jewelry
