Product Description
Hamilton 986, 987, 987A, 987E, 987F, 987S 6/0S Size T end mainspring.
Height 1.40mm
Width 0.125mm
length 280mm
barrel inner width 11mm American size 5 x 9 3/4 x 11
JA217
2321
Photo of mainspring is for reference only not exact photo of the item.
