Old Inherited Caravan,

 .When i purchased the plot @ the Boatyard,there was an old C/van already on it .What i am trying to ascertain is the age & manufacturer .builder .Could any of the C.C members maybe remember far enough back to help ?? 

It has a solid steel 'C'frame chassis.Conventional tow hitch.Aluminium body,& would sleep four.End kitchen,a small cast iron fireplace & a row of floor to ceiling cupboards on the offside.Two rooflights.

If anybody could assist i would be most gratefull.