I found my father's old camera equipment along with a lens I had never heard of. From the markings, it it a Soligor 70-222mm 3.5f. I had never heard of Soligor, so I went to my trusty friend, google. From what I can tell it's a German(?) company from the 70s. Any idea of it's origins and quality? It seems to be very solidly built and is still in good condition after ~30 years.