Larry, I gave this shot a once over off you tube, and it looks like possibly a Berkshire off the Nickel Plate Road or possibly the Pierre Marquette.
The brakemans shack on the tender through's me though. Maybe Hot Water will chime in and clear it all up.
It does look like a C&O Tender, and possible one of their 2600 series, they they got after the merger with "PM", but again the tender dog house throws me!.......................................