I bought a used Sears 200 power reflector telescope off ebay and it showed up without the top of the tripod (called the hub). I found the part number on the searspartsdirect.com website (the part number is D20, the telescope model number is 24606). This part will likely work for many Sears telescopes from the 1970's and 1980's.
Sears-Hub.stl | 132.9KB |