Original Land Rover factory manufactured part (not aftermarket re-maufactured, e.g. Britpart) taken from a Series 3 Suffix A gearbox, serial number S90100268A and in good used used condition.  There is some wear to the reverse gear teeth (see photos).  The bearing journals are also good.

This is the earlier Series 3 layshaft cluster with the number of teeth on each of the gears being 27, 22, 13 and 16.