Mainsprings

Fits Seiko Movement #s: 60M, Goldfeather Measurements: 1.15 x 0.115 x 360 / 2.5 x 10.5 x 15.5

6 x 9 1/2 x 12 1/2 White-a-Loy mainspring

1.30 x 0.125 x 360 Swiss Mainspring

Fits Seiko Movement #s: 2501A, 2501B, 2501C 2505A, 2505B, 2516B 2517A, 2517B Measurements: 1.05 x 0.075 x 260 / 1.5 x 13 10.5 (auto)

Fits Seiko Movement #s: 3180 Measurements: 1.45 x 0.13 x 420 / 4.5 x 11 x 18.5