LNWR Claughton 4-6-0 No 5908 Alfred Fletcher stands at Crewe Works after being fitted with Caprotti valve gear in 1926.
Ian R Townend says "It is interesting that the locomotive is still in LNWR plain black livery but with LMS crest on the cabside and the only evidence of its new LMS number is the smokebox plate "

Photo: Rail Archive Stephenson