Vacheron Constantin ref.597109

Hello, recently my father gave me an old clock, I was shocked when I saw the mark, and how precious it is.
But I have a problem and not know what the model or find any reference to it. Only it is quartz, and back is engraved with a serial number 597109Vacheron Constantin ref.597109 Vacheron Constantin ref.597109 Vacheron Constantin ref.597109
Thanks,
Fernando MH
looks like ref 74002 from the late 80s (nt)
01/31/2011 - 10:08
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