You finally found it. These extremely rare 1 ounce .999 fine silver trade units are the unicorns of all unicorns. Mintage unknown. Trust me folks they are very, very difficult to find. This may be your only opportunity to purchase one. An absolute must have for any Hoffman and Hoffman Collector. There are many collectors out there, who have been seeking this particular piece to complete their Hoffman and Hoffman type set.
***First photo is a stock photo from AllEngelhard, not the round offered***