I believe it dates from around 1928/30.
This morning it has been through its' paces with a three coach train around my Brunswick Road layout. It has been running well on the German Trix Express plastic sleeper 3-rail track using around 8/10 volts DC from an H & M Safety Minor control unit.
This must be an upper class line; 8 first class compartments and just 2 third class!
Some of you will have seen the layout at last years TCS show. It is really no more than a scenic test track, but ideal for running Bing TT clockwork locos, and of course Trix Twin and Trix Express.
It is designed so that each quarter presents a different scene, and also the center backscene means the train does briefly go out of sight as it rounds the circle.