12b Land Rover Series 2, issued 1959, length 57mm, box types B-C and D.
12c Land Rover Safari, issued 1965, length 71mm, box types E and F.

The 12a Model

The 12b Model.

The 12b Model with GPW.

The two different types of the steering wheels.


The Thick and Thin steering columns, the thick column fits into a parallel slot, the thin column fits into a tapered slot.

The unlisted wheel size variation 10 x 24 tread instead of 11 x 24 tread.

The 12c Model.

A few variations on this model can be seen on Nicks variation site.
George T.
The unlisted wheel size variation, 10 x 24 tread instead of 11 x 24 tread.