John,
As other people talked to the lady in California, and she indicated her husband got them in Northern california, I maintain they're unattributed. I wo'nt put this chip in a Nevada Collection until somebody at least say's " I was there, and picked up the chips". I understand attributions are not always ironclad. The gentleman who recently contacted us knows only that he got the chips in the 40's from his high roller brother-in-law. Luckily he has volunteered to call him and find out where they originated. Hopefully he will remember. He did say the brother-in-law was a big gambler in Nevada, both north and south. If we find out we'll let everyone know.
David