The only Parsifal I would really put in the "what would you save from a burning building" list is my radio tape of Cluytens at Bayreuth in 1965. Followed by Thielemann in Berlin in the late 1990s....
Radio tape? Did it make it to CD? Oh, perhaps that was his Scala recording...? Who were the singers, ARB, please? And what is it you particularly enjoy about the recording?
If anyone had a tape-recorder in their hand bag (or briefcase) the night that Gottlob Frick sang Gurnemanz for Reggie Goodall I'll offer a very considerable dowry!!