I would call it a bespoke patina finish painstakingly developed by years of careful, controlled exposure to llama saliva, and market it to hipsters in Brooklyn for $10k USD.
The dial is a matter of taste, some will love it others not so much. The numbers and seconds track are in good condition and the discoloration is fairly even, so I would leave it as is.
I like it, that been said I might have one redone. To me for a refinish, has to be perfect then you do some polishing to the case add a cool strap and enjoy it.