Frateschi Southern Pacific Lines Ten Wheeler (4-6-0) locomotive.

Motor is in the tender, driving all 8 wheels. Tender is screwed to loco, so there's no slack between the two. Current is collected on all 8 tender wheels as well as 4 of the loco's driving wheels.

Plug-in NEM coupler fitted in tender. Can be replaced with Kadee etc. Plug-in dummy knuckle coupling on loco.