This is an early execution Heuer Carrera Ref. 3647S, with a low serial of 61,xxx and no “t” by the swiss signature. It is in true “barn find” condition: unmolested and untouched. The case is unpolished, and the sunburst silver dial is very mint. All of the lume plots are in tact and retain most of their definition, and the lume in the hands is still present and in tact. The original crystal has some light scratches.
This is a great example of a very sought after watch.