Interesting discovery in my ongoing research into all things Cougar...
Dave Lloyd was one of the Cougar frame builders and one of the three that set up Corrado when Dolan sold the Cougar brand to Paul Donohue.
These Deda Zero Tre framesets are pro team Colnago C40 copies, of which there are apparently three... Casino (black, white and yellow), Rabobank as above and a blue Mapei one, which I can't think I've seen an example of. They will all be 1997 at the earliest, more likely 98.
I have also managed to bag a NOS orangey one!!! Cost me a fortune though...