Pocket Watch Mainspring #611 16 Size fits Hamilton

New Pocket Watch 16S Mainspring for Hamilton Pocket Watches

• This is a new size 16S mainspring #611 for a Hamilton watch
• This mainspring 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
• Dennisons of 19 1/2 x 4 x 21 1/4