I am looking for information regarding my brass ota, it looks to be about 100 years old with a white painted tube and black painted cell, focuser and 1.100 diameter eyepiece about 17mm fl. I have the tube cradle/altitude trunion but no mount. It weighs 8.5 pounds! It closely resembles an 80mm pictured in a thread on this forum discussing value, but lacks an erecting system.
Mechanically and optically it is 100% but could use a good cleaning.
I'd love to find an old catalog entry and if anyone has any suggestions about how to clean the air spaced objective and refinish the white tube and black painted parts that would be super.