Don't know which state you found it, but for what its worth (as its an unusual surname), NSW BDMs indicate just a few records for the north coast of NSW, and according to the white pages, there are a couple of same suranmes still living in that area, and a few within NSW.
You could try them, its just a matter how far you want to go in trying to contact relatives. And in saying that, was it the relatives who gave the bible to the second hand dealer in the first place? Some people sell deceased estates in bulk direct to second hand dealers. They are not interested in family history, whereas people like you, me and RootChatters in general would be most grateful for your interest in trying to find the rightful owner.
Les
