Aster 19-4, WIG-WAG automatic movement

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Early automatic wind movement developed by Aster Watch Company, La Champagne S.A. in Bienne Switzerland and introduced in 1931. The entire movement acts as swingning mass and oscil lates up and down in the case. An 8.75''' ordinary movement is fitted in the automatic device which winds directly on the movements ratchet wheel Technical data: Aster 19-4 15 jewels, automatic winding. S: = 8.75''' 19.4 mm / 21.7 x 30.0 mm. with the automatic device. H: = 4.10 mm. N: = 18.000 A/h. Cut bimetallic balance, flat hairspring. Power reserve: Show more