So the recent discussion on the fine wine list Henschke offer had me searching through my old Lay and Wheeler price list. As you may know they were the main agents for this and several other top Australia wine back in the day.
The first list I have that they appear in is the 1992. There’s a photo of the page:-
Hill of Grace for £15.75, seems a bargain now. The drinking window to 93 seems a bit pessimistic as well.