Similar boats are the Sanibel 18 made by International Marine like Potters,
Sanibel by International Marine
and Montgomerys Montgomery Sailboats Owners Group
O'Day used to make a 19, Balboa had an 18, Catalina also had/has boats like the Capri 18 and 22, or Catalina 22.
This is an unofficial group of pocket cruisers which may be helpful to you also