Heavy Duty Bufferstop
This is a model of an earth/ballast filled timber bufferstop, a type which was widely used for sidings and headshunts.
They were certainly still to be seen in the 1970's and I suspect some are still around at remote locations. They make an impressive sight, particularly when in a row, at the end of an array of sidings.
The model is cast in solid resin and is heavy. The method of fixing is two long screws, countersunk vertically through the main part of the casting, which should make it capable of withstanding anything you can throw at it!
This particular model (finished in SR style with a red band on a white background) is destined for Ted Sadler's "Walmington-on-Sea".
Other companies generally painted the cross beam plain white for headshunts and sidings or plain red where placed on a terminal road at a station.
These castings will be available from Mike (Williams Models) for self-assembly and painting (only the cross beam requires screwing onto the main casting).
The prototype for this model came from Aylesbury (High Street) at the end of the L&NWR branch from Cheddington (close to where the "Great Train Robbery" took place).
John.