Here is the link to one of 3 Cheoy Lee Associations CLICK
They list an Australian couple with one :-
Boat-"Nullarbor" - 1981 48' Robert Perry
OWNER - Adrian & Sonia van den Bok
AREA OF SAILING - S. Australia
E-Mail Adrian & Sonia
When I was in Hong Kong, an Australian friend was working for Cheoy Lee as the Quality Controller for boats being built for Australia - he took me round the enormous boat yard several times. Although I often sailed as crew on Cheoy Lees - I cannot remember sailing on one as big as the 48.
I don't know how they fare from blister disease - that period of builds produced some problems 10 years plus down the line, therefore a surveyor would want a careful examination of the hull for a prospective buyer.