Terry - I bought that Czech outfit. It arrived and it's really a cute little train. Runs well (?) except the worm gear on the power unit doesn't always engage the gear on the axle. I tried shimming the motor closer but still doesn't help much. Brass against nylon and nylon loses. Roof, frame, and couplers are 600, body started as a 600. 5 doors were eliminated (each end, one on one side and both from the other side) from each car and replaced with windows (3 on each end) so only one entrance and one exit! Not too safe for the passengers! Motorman's window is not covered with film on the power unit. New and out of my wheelhouse but a definite relation to early period Lionel O gauge.