In a word probably The Aust. Columbia 22 I believe is based on the Coronado 23 .
I had built a Columbia 27 back in the seventies and they were also based on the Coronado boats. BTW there was/is no manual.
Try contacting International Marine in Melbourne and ask them. They built them alongside the Bertram boats .
Hood sails Melbourne loft supplied all the sails . Manager was Col. Anderson.
If all else fails try St. Kilda marina they were connected to International Marine and the Columbia yacht club of Australia was based there
Have a look here
sailboatdata.com/sailboat/columbia-22and here
sailboatdata.com/firstpage.asp