This was purchased some time ago for a project that never materialized. In the meantime I have since acquired a Meade 80mm f/15 OTA.
This lens was made in Japan and most likely was made by TOWA of Japan. The 80mm f/15 cell and tube mount from my Meade 80mm OTA is identical to this lens/mount. This lens is still in the original packing from my purchase and has never been mounted. If it performs anywhere near the one I have, you will be very pleased. Very sharp with minimal color as you would expect from a long focal length achomat. $95ppd