An American 0-4-0 to Don Young's "Marie E" design, a good beginner's engine, with one of the shortest tenders you'll ever have to lean over.
Silver soldered boiler, 80psi working pressure, feed by axle pump and injector with a hand pump in the tender. Gunmetal cylinders with slide valves actuated by Stephenson's gear with pole reverser in cab, twin hydrostatic lubricators.
Mechanically it's in decent condition, paintwork is unfabulous.
Locomotive 27 inches
Tender 15 inches