The top one looks like mine, Steve, except for the T knob. That mower was a major increase in luxury when I got it - I'd been using a Victa my father kept at his factory, with a rope pulley and an exposed flywheel. As I recall it had a tin fuel tank cap, painted green, with one or more ventilation holes. It was just a tired old mower in 1963, only kept because it worked.
