A troy ounce of gold is equal to 31.10 grams. It's a unit of evaluate 1st Employed in the Middle Ages, originating in Troyes, France. Troy body weight models are generally used in the Cherished Metals industry. Struck in constrained quantities, Proof Krugerrand coins also differ from their bullion variations https://knoxjvdjp.ageeksblog.com/26345905/krugerrand-gold-coin-worth-things-to-know-before-you-buy