I guess you missed my reply to Ken in this posting thread. All have been tested and are confirmed to be silver. I decided over fifteen years ago to start a collection of silver and/or gold casino tokens/medals and currently have over 400 different items. I am very specific in what I add to my collection and the tokens pictured are my duplicates. They will test positive for .999 silver with X-ray fluorescence spectrometer and as silver with the simple acid test but this is a destructive test. I do offer a full money back guarantee on the tokens offered. Items #1, 8, 10 and 15, I have had in large groups that I purchased cheap only to sell them to a metal reclaiming business that I have dealt with for over a decade with no problems, I could not pass up the almost $50 per ounce price awhile back. #13 is an oops on my part, I only show one side; please see the link which shows a similar token that recently sold on ebay:

http://www.ebay.com/itm/Aladdin-Grand-Opening-2-75oz-Silver-1976-Commemorative-w-Box-and-ribbon-Rare-/121812152356?hash=item1c5c91f024%3Ag%3AJQgAAOSwAYtWQqBS&nma=true&si=h8DZtzbYcRrjOXWQtYZLjIZ%252BD7Y%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557