I can't judge if that's a K mount, but I do know that the "C/D" label was reserved for Soligor's better efforts. Some people comment favorably on the CDs.
I own an old Soligor 35-140 push pull that's not so good, but it's not a CD lens.
You might search Usenet or Photonet for comments about this 80-200.
Henri Toivonen wrote:
Guys, what can you tell me about this lens?
http://www.bicekru.org/~eatfrog/soligor.jpg
Is it even K-mount?
/Henri