Rare rough movement with 3 parallel bridges, circa 1890.
Keyless nickel movement with 'three bridges,' as used extensively by the famous Swiss firm of Girard Perregaux based in La Chaux-de-Fonds. The hollow-back frame stamped twice with the number 290283 and the escape bridge marked in pencil (is is difficult to read): 'Points point.' 45.5 mm diameter.
Constant Girard, who married Marie Perregaux in 1852, created the 'three bridge' design with parallel bridges in the early 1880's and was awarded a gold medal for the design including a tourbillon at the Paris Universal Exposition of 1889. The design is still in production and used in their wristwatches.
A rare survival, in good condition.
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