These images of Maserati factory drawings are from a booklet published in the late Forties by Floyd Clymer. A reference to these models was made in an article called 'Maserati Might' in the 17th August 1967 issue of AUTOCAR.
"The prewar Maserati never attained the inviolable stature of Bugatti or Alfa Romeo because it was never really known outside the racing circuits and the racing fraternity. One attempt was made by the Maserati brothers to produce a touring version for sale to the general public. A well-illustrated and lavish brochure, was printed in 1933 but only one car was ever built".