If you have a small, flat, yard with lots of obstacles; you would love mowing with it. 32" cut, two speed. Slightly louder than average, warmish on the right calf, and will scalp in a heartbeat if you have lumps and bumps.
Traction stinks on wet grass or slopes.
It is a zero turn machine, if you can spin the steering wheel fast enough.
In the pic here, the drive engagement is the column mounted lever, the twist lever to the right of the column (missing a plastic knob, there should be two) is the low/high speed selector, and the lever below the seat on the left side is the blade engagement.
They were made from the early or mid 60's through the late 2000's: