fitted from 1931 to 1937 and alternative horizontal cab handrail
applied between 1930 and 1931.
fitting of the upper rear lamp brackets with straight and recessed fenders and
portholes on engines as built but plated over or removed from the late 1920s.
steps fitted to the rear bunker from the late 1920s / early 1930s replacing the
flat steps as built.
Tapered pattern chimneys.
Short or Tall
safety valve bonnets.
Early or late
pattern water fillers.
Plain or riveted
A small number of
the class were subsequently rebuilt with curved platform ends to the frames and
outside steam pipes.
In 1938/39 five
engines were rebuilt and renumbered 3100-04. These engines had revised cabs and
roofs, new front ends and curved platform ends, new boilers and smaller (5'-3")
It is possible
that some engines were fitted with cast brake hangers in later life, but the kit
only includes for the fabricated type of hanger.
There is no
provision for the early type of brake arrangement fitted to the class when they
reveal that numerous changes were made as the engines passed though Works such
as, different style buffers, additional hand rails, balance weights and even
coupled wheels with some examples being fitted with the patterns associated with
later 5'-8" Prairie classes.
The smokebox top
mounted lamp iron may have been relocated to the smokebox door in some
instances, but we have seen no photographic evidence to support this.