Longines 17J. Crown Thickness: 3.4 mm Sn. Manufacturer Longines. Signature 1972: 51430168, Longines, Swiss, 17 Jewels; Incabloc. Setting Type Stem Set. Winding Type Stem Winding. Notes Other data: balance staff: U3303 stem: W1001 mainspring / battery: 1.60 x 6.5 x 0.06mm Mainspring: 1.600 x 6.500 x 0.060 x 260.000 mm.
