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Birks multifunction chronograph, circa 1980’s with 30 minute and 24 hour register, displays day, date, month, moon phase and is powered by a Valjoux 7768 movement. Case is gold plated with steel back, watch is with original Birks box and papers and is in excellent working condition. The case is 35 mm wide (not including crown) x 43 mm lug to lug