Can anyone tell me anything about this watch? It was my godfather's, now my mom's and she thinks that the cameo on the front may be done by Cartier. Other than that I know that it is a Patek Philippe watch/ pin I guess to be worn on the lapel or something and it was purchased in 1924. Below pictured: front and back of the watch, bill of sale with bank info and Patek Philippe rep info all over it, case inside and back with what appears to be a serial number. If it is not obvious those are diamonds that the watch is encrusted with.