The Stanier full brakes were built for use in passenger trains, parcels trains and in newspaper distribution. Most had shell vents, though some in the last batch were fitted with the ridged dome type used on the contemporary ‘Porthole’ stock. The last 189 built had no waist beading and those built in 1944 had second hand underframes. Some had their gangways removed in later BR days. Given these variations, photographs should be consulted if you are concerned to portray a particular example.
See M56K for the riveted bogie version.