Correction. Some of the model D's were thumbhole stocks.
That picture looks like the SKS-M to me. The SKS-D model that I'm speaking of is the pre-ban version that has a 20 inch barrel, accepts AK mags, and has a spike bayonet. The "M" models were the post 89 ban versions. I do think that there is one "D" model that came with the thumbhole stock though, but I could be wrong.