Found this at the following website:
http://www.coinsite.com/content/cdanswe ... chive9.aspAt the bottom of the page, this was posted:
Question: I would like to know the general value of 2 coins I have that say "AMERICAN PACIFIC MINT" 1982, one troy ounce, silver trade unit, .999 fine silver, and one that says "E. PLURIBUS UNUM" 1983, one troy ounce, silver trade unit, .999 fine silver? Is this a common medallion? Any information you could give me would be appreciated very much. Thank you for your time.
During the 1980's many small private companies went into business striking medals containing one ounce of silver. The purpose was to sell silver at a substantial markup with the guise of this item being a premium collectible. Virtually all of these items are traded today at a slight discount to the world silver price as none of these small outfits are recognized and there is always the suspicion that the silver content is less than indicated.
Hope that helps.