Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

FYI....the solid flywheel and the '2' on the bottom
of the base mark this as the 'early' or first version.
This engine was produced from 1921 to about 1931
according to the 'Empire' tome by Donald Stilson. 
Maybe you should keep it - these older B-31's do not
come up too often.

Wayne