Ok, details ... it is DW Val. 72 case with no serial number. The dial is also from DW. I am not sure about the origin of the rep bracelet. It has 571 ends and after reworking it, I think it turned out very nice. The crystal and crown are gen, the tube is from Clark and the pushers from Ofrei. I was also very happy with the small print of the "ROLEX cosmograph" and the placement of the crown on the dial. It is not perfect, but I think it is better than the average dial. The movement is a fully serviced Val. 72 out of a Longines chronograph. Rob put it all together for me. He knows better than me, but there were two main problems. The first being to find a set of hands that fit (or could be made to fit). The hour and minute hands were fine, but we went through three sets of chronograph hands to find a set that worked. The other problem (and I think this is common) was that the bezel had to be shaved slightly to fit over the gen crystal.
It came together perfectly and I am very happy with the end result. Thanks again Rob!