SILVERBACK TRADING

Authenticating antiques; Authenticating coins; Authenticating semi-precious gemstones; Authenticating banknotes; Authenticating diamonds; Authenticating gemstones; Authenticating jewelry; Authentication in the field of jewelry, precious metals, alloys of precious metals, coins, sports memorabilia, antiques, art, and collectibles; Coin grading services; Gemological services, namely, grading precious stones; Providing a website featuring a searchable on-line quality evaluation of rarities for the purpose of measuring the scarcity of rare collectible objects