type of steam engine I have

I came accross a steam engine at an estate sale and it is an H.O. scale but it appears to have a 2-8-8-8-2 set up on it. It is an all Brass steamer, could anyone help me in finding out what maker it is.

Could be an Erie Tri-Plex locomotive,I have seen ads for them in old issues of Model Railroader from the 1960’s.Could you try posting your question in the Model railroad general site ? Joe G.