we believe this is a 16660 from 1984 that at some point was fitted with an original comex dial that appears to be all original but repaired and was at some point exposed to moisture and the hands are original.  The case was probably lightly polished in the past but remains thick and even.  The bezel and bracelet are original and are in nice shape.  The watch passes a basic pressure test and movement is running well and keeping excellent time.  overall an attractive looking 16660 with comex logo dial for a fraction of the price.