The dial is based on DW's early 6263 just before the silver brushed 6263 arrived. See how DAYTONA is not parallel to the curve of the subdial at the right side? Also the spacing for COSMOGRAPH is too proportional, but it does have the correct capital "A" at the end with the flat top. It was a struggle to get him to do that.
The case is his v72 special without the v2.0 bulge at the crown, and it's his super rare movement with all the fancy bits added and stampings. Even the dial side of the movement will have correct markings if you get it apart that far... check it out. I thought he only made 2 or 3 of them... Nice find!
It's a VERY nice........................ rep.
IMHO...............