Don't see too many of these around, the bezel is one of those consisting of two parts and in different colors. The inner dark grey bezel had crumbled away but the rest of the watch was in relatively good condition, so I took it apart for some cleaning and here's a view of all the parts:
The new replacement inner bezel piece is at bottom left. After assembly the watch looks pretty good:
The jelly turquiose color matches the marine motif of the watch, with features similar to that of the old DW-8600 Gulfman, with tidegraph and moongraph.