Hamilton 20/0s 21/0s model 2921 0.075 mm 17 jewels Mainspring blue alloy
USD 5.00 USD
Specifications
| Compatible Brand | Hamilton |
| Brand | Hamilton |
| Type | Mainspring |
| Color | Blue |
| Compatible Model | 721 995 997 |
| MPN | 770 |
| Country Of Origin | United States |