The company built locomotives and traction engines in a wide range of gauges and scales, including work for David Curwen and Dobwalls, for which they built the Union Pacific 4-8-8-4 "William Jeffers" and 4-8-4s "Queen of Nebraska" and "Queen of Wyoming".
The engine appears to have been test steamed - possible once at the factory when new - since when it's been kept for display in its case. We've tested the boiler at twice working pressure - it's sound throughout, the only thing noted was a leaking regulator - but made no attempt to steam it given the locomotive's provenance and condition.
Mechanically as-new, the paintwork and lining remain in very good order, with some minor chips and flaking.
| gauge | 3 1/2 inch |
| length/inches | 29+18 |
| width/inches | 9 |
| height/inches | 11 |
| wheel material | cast iron |
| axlebox type | plain bearing |
| cylinder material | gunmetal |
| valve type | piston |
| valve gear | Stephensons |
| reverser type | screw |
| lubricator type | mechanical |
| injector(s) | 2 |
| boiler number | 9823 |
| year built | c1975 |
| boiler maker | Severn Lamb |
| CE mark | n/a pre-2002 |
| working pressure/psi | 80 |
| boiler type | locomotive |
| boiler material | copper |
| boiler construction | silver soldered |
| hydraulic test valid to | 8-Jul-2025 |
| superheater(s) | 2 |
| superheater type | flue tube |
| safety valve(s) | 1 |
| safety valve type | spring |
| mechanical pump | 1 |
| hand pump | 1 |
| whistle | yes |