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6P5F also shown on the SMF website, so the previous note is removed
Forty were built between October 1933 and March 1934 as part of a single Lot (Lot 104). Stanier then produced a larger 4-6-0 for his mixed traffic class, the [[45110|LMS Black Five]] Class. Probably due to the success of this design, no further Moguls were built.
The Moguls were originally designated as class 4F when new, subsequently altered to 5P4F in 1934 and 5P5F in 1938/9. BR rated the class 6P5F and 5MT.<ref group="note">BR Database records the class as 6P5F</ref> They were initially numbered 13245–13284 (following on from the Crabs), becoming 2945–2984 in 1934 (the Crabs becoming 2700–2944). BR added 40000 to their numbers so they became 42945–42984. The Moguls were always painted black, normally lined out except during the 1940s and towards the end of steam.
The type was sometimes referred to by railwaymen as "North West Crabs". The Class was also known as 'Lobsters'.<ref>[https://www.brdatabase.info/locoqry.php?action=class&type=S&id=426001 BR Database] (Retrieved 26 March 2024)</ref> , presumably as a variant of 'crab'. They were mainly found on the ex-LNWR system where they were regularly used on heavy freight duties, often at night. As a mixed traffic loco they were also used on passenger workings, particularly on summer reliefs, and occasionally on express work, usually deputising when a larger locomotive was unavailable (see below).
== 13268 in service ==
