Unknown loco type.

 Hope fully some king soul can advise what type of loco this model is based on.
I bought it as a runner with a Graham Farish-by Bachmann- chassis.
A bit of fettling was needed to get the chassis to fit correctly and sit at the correct height. But now it runs well and once a crew is fitted plus a couple of additional parts then it will fit in with other stock on Hillbrow.