There are no steps and usually there are no brake wheels.
There are three variations:
Variation T: "N" is in the second panel with two lines of car data and usually had brake wheels. The pictured example above does not have brake wheels. Early 1954 Production.
Variation U: "N" is in the third panel, three lines of car data and usually came without brake wheels. Has Type 6 trucks with magnetic couplers. 1955 Production.
Variation V: "N" is in the third panel, three lines of car data, but no brake wheels. Came with Type 7 bar-end trucks with tabbed couplers. 1956 Production.