These have come in with a large collection that arrived recently, which included a complete BB1.
| wheel material | steel |
| axlebox type | plain bearing |
| cylinder material | cast iron |
| valve type | slide |
| valve gear | Stephensons |
| reverser type | pole |
| lubricator type | mechanical |
| injector(s) | 1 |
| boiler maker | non-commercial |
| CE mark | n/a - non-commercial |
| working pressure/psi | 100 |
| boiler type | locomotive |
| boiler material | steel |
| boiler construction | welded, expanded tubes |
| safety valve(s) | 1 |
| safety valve type | Ramsbottom |
| mechanical pump | 1 |
| road speed(s) | 1 |
| differential | no |