Perth South 63A allocated LMS Jubilee 4-6-0 No 45727 Inflexible with the 10.17am Inverness express waiting to leave Edinburgh Waverley on 1 July 1957. I do not know enough about engine workings in the area to say if this was a regular LMR loco diagram or would this usually be covered by a former LNER engine - does anyone know?

Photo: J.P. Wilson / Rail Archive Stephenson