3 1/2 inch gauge Britannia chassis

3 1/2 inch gauge Britannia to LBSC's 1950 design, published at the same time as British Railways rolled out the original. Functional rather than pretty workmanship, there's a set of "Model Engineer" magazines containing the master's "words & music".

If you need to remind yourself what the finished thing looks like, I've got a running engine recently come in here.

Length
Locomotive 33 inches
Tender 18 inches