Silver would have to reach 16.67 per ounce for a silver strike to be worth $10 in silver value alone.

For the lighter strikes, just take $10 divided by the weight of silver: so for a strike with half an ounce of silver, $10 / 0.5 = $20 an ounce.

Of course, retail bullion is usually sold at a premium to melt, and purchased back at a discount to melt; for silver, this can be as high as 25-30%, but usually about 10% (in other words, a significant bid-ask spread). So likely silver would have to be about 10% above the prices quoted to get $10 back when you sold it.

Brent J. Jensen
R-8007
orbis non sufficit