Hamilton 987A and S Balance Staff New Old Stock tool Sizing: The regular length one-piece

Sizing:  The regular length one-piece band is 9

This is the Balance Wheel Hair Spring for a Waltham 6/0-D movement used in military A-17 pilot's watches

This clock was mounted on board several different types of U

NOTE: VERY LIMITED QUANTITIES AVAILABLE OF OUR TOP QUALITY GUSS BANDS

Hamilton 987A and S Balance Staff New Old Stock tool Sizing: The regular length one-pieceThis is ONE Balance Staff for a Hamilton 987A or 987S watch movement. The 987A movement is shown. The 987S movement had a sweep second, but both have the same balance staff. These staffs were often used in WW2 Hamilton wrist watches. NOTE: We have many balance staff assortments. Email us with your needs.