Tube of (20) Ohio Prescious Metals 1 Troy Ounce .999 Fine Silver Rounds - This lot is a tube of (20) 1 troy ounce .999 fine silver rounds produced by Ohio Prescious Metals. The obverse side features the Ohio Precious Metals logo engraved in the center, along with the weight and purity of the round the rim, while the reverse side features the Ohio Precious Metals logo repeated in the center of the round, surrounded by the inscriptions "OPM Metals" and "Made In the USA".