This French Hornby train was available in 3 versions. No 1 with 1 passenger car (as you have), No 2 with two cars and No 3 with 2 cars and a small station like this:
Before the war the locomotive did not have smoke deflectors; so your version is postwar.
The rectangular holes in the box are for the sleepers of the curved rail. I assume the box top looked like this, since M0 and Train Express had the same box tops:
Regards
Fred
