Never seen such an engine before. Odd that it doesn't have the classic UK buffers on the front... unless its built into the coupler I see there. I also see the Isle of Man logo on thew left of the front fender. Does that mean this locomotive is originally from there?
This loco like the rest (bar one) built for the I.M.R. was built by Beyer Peacock in Manchester before being shipped out to the island for service. So what you see here is a loco running on the line it was origianlly built for with original rolling stock. The Norweigan "chopper" coupling offers cusioning whilst being pulled due to a spring behind the buffer beam. This is however no cussioning whilst being pushed/coupled Once coupled it behaves much like a buckeye