Bachmann Industries
Spectrum(R) Steam Modern American 4-4-0 Outside Frame, Powered, with DCC

Painted, Unlettered Wood Cab, Foot Board Pilot (black w/red windows) 1920s
Walthers Part # 160-28322
On30 scale, $370.00, currently in stock at Walthers

 
Features outside frame, plenty of applied separate parts and smooth-running mechanism with factory-installed DCC decoder.