A HACON Technical 23 was the first press camera that I acquired back in the early 70s. It is a nice compact camera with a lot of features. The Technical version has a Double Track - Triple Extension Bellows, revolving back, tilting back, side swings, drop bed, rising lens board and a backward tilt on the lens board. Mine has a standard spring back although Graflok type backs were also available. When collapsed it only measures 4 1/2" X 2 1/2". The camera was manufactured in Hamilton, Ontario Canada. I have only seen one other 2X3 Hacon over the years and very little information on them other than in adds in photo mags from the 1950s.
Gord