[David_Hayward (RIP)]

Max, thanks mate. I reckon it's to Contract S/M 2019. As to the C30 was it:

'Engine number R3,747,383 BLOCK CAST DATE July 14 1941 L 4449560 S/M. 2003 8 in Australia # 11 Cab
around serial # 1844104500'? There are at least two definite other survivors from British Contract S/M 2003, including one now in Norway. Serial # 1844103869 was W.D. # L 4449597. We now know of 30 definite serials of 1941 C30s.