Soligor 350mm f5.6's come in tokina and tamron made incarnations as well but these
9xxxx serials with the "chrome ears" on the aperture ring are the most common. I acquired one of these about 3 years ago and wasn't impressed. However I have now picked up another one and this one is much better, very much in the right ballpark IQ-wise for one of these t-mount preset lenses.
These are my standard test pics of one of the castle turrets. Samsung NX20, f5.6, f8, f11.
However I would still rate the
tamron made 350mm best. Between the
tokina made 350mm and this one I think the tokina edges it on IQ but this one has the advantage re focusing closer. This lens might be a preferred choice over it's sibling the chrome eared 400mm f6.3, also because of its closer focusing capability - ~ 4m as opposed to 6m.