Editing LMS Coronation Class (section)

==== Double chimneys ====
Single chimneys were fitted to Nos. 6220–6234 when built.{{r|Baker|p=59}} Following a successful trial using No. 6234 ''Duchess of Abercorn'' on 26 February 1939,{{r|Roden|pp=38–42}} these were replaced with [[double chimney|double blastpipes and chimney]]s between 1939 and 1944, the last being No. 6220 ''Coronation''. From No. 6235 onwards, all the locomotives were built with double blastpipes and chimneys.{{r|Baker|pp=59, 66}} {{r|Jenkinson|loc=Plate 77}}