| NBR C Class 673 Maude | |
| Powertype: | Steam |
| Builder: | Neilson and Company |
| Serialnumber: | 4392 |
| Builddate: | December 1891 |
| Whytetype: | 0-6-0 |
| Driverdiameter: | 5feet |
| Fueltype: | Coal |
| Boilerpressure: | 1652NaN2 |
| Cylindercount: | Two, inside |
| Cylindersize: | 18x |
| Valvegear: | Stephenson |
| Tractiveeffort: | 196902NaN2 |
| Powerclass: | BR: 2F |
| Fleetnumbers: | NBR 673 LNER 9673 LNER 5243 BR 65243 |
| Officialname: | Maude |
| Withdrawndate: | July 1966 |
| Disposition: | On static display, Awaiting overhaul |
North British Railway C Class number 673 Maude is North British Railway C class 0-6-0 tender engine, that was built by Neilson & Co at the Hyde Park Works in Glasgow in 1891.
Around on April 23, 2000, the ownership of the locomotive was transferred to the Bullied Preservation Society for its future care. As in the original film, The Railway Children a wide range of rolling stock was used. The locomotives seen are NBR C Class No. 673 'Maude', LSWR B4 class No. 96 'Normandy', LB&SCR E4 class No. 473 'Birch Grove', and SECR C Class No. 592 (as the Green Dragon). No. 592 and Maude were painted in fictional liveries for the filming, with No. 592 wearing typical SECR lined green but with GNSR lettering, symbolising the fictional Great Northern and Southern Railway, and Maude in plain black with GNSR lettering. Birch Grove was seen sporting its original LB&SCR lined brown, and Normandy was painted in Southern Railway unlined black. Maude is based on the Bo'ness and Kinneil Railway near Edinburgh whilst the other locomotives remain on the Bluebell Railway.