The "89937" (found between the lugs -- ??) is most likely a serial number; the reference number should be between the other lugs, and will tell us exactly which model you have. unfortunately, Heuer did not keep track of the serial numbers, by date.

post photos, or send them by e-mail, and we can provide date within a year or two.

thanks for your message.

Jeff

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: It has three dials, a "w" on the
: knob, 12h dial, screw back, Valjoux 72
: movement, waterproof to 330ft. I cant seem
: to find any info on it. It has belonged to
: my father for years so I doubt it is a
: frankenwatch or fake. Anyone have any idea
: what year it was made or possibly it's
: authenticity? I will try and post a picture
: if I can find my cable for my camera.
: Thanks.