Silicone Balance Spring

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Manufacturer Tudor Caliber Number MT5612, MT-5612 In-House? Yes COSC? Yes Diameter 31.8mm Thickness 6.5mm Vibrations Per Hour 28,800 bph (4...

Manufacturer Tudor Caliber Number MT5602, MT-5602 In-House Yes Diameter 31.8mm Thickness 6.5mm Vibrations Per Hour 28,800 bph (4 Hz) Power...

Manufacturer Tudor Caliber Number MT5621, MT-5621 In-House? Yes Diameter 33.8mm Height 6.5mm Vibrations Per Hour 28,800 bph (4 Hz) Power...