These planes seem to have started being available from MARPLES since at least 1862. The table below will explain their availability over time until 1959. In the April 1962 Price list #3020 was shown as being available up to 1/2″ with again 1/8″ increments that could be had. This situation was also offered for #3022 up to 3/4″+..
But by the time of the March 1964 Price List, as with all other wooden Shamrock Planes, they were shown to be de-listed.