The Massey-Harris 33 was manufactured from 1952 to 1955. The 1955 model has the following stats:
No. Cylinders: 4
Displ. Cu. In.: 201
No. Speeds: 5F-1R
Approx Shipping Weight (lbs): 5191
Estimated Average Value
The above info. is according to Machinery Link the weight sounds kinda high to me. Bear's info. may be more on the mark.