The 1000 ounce silver bar is the bar used in the 5000 ounce silver contract as bought and sold on the COMEX exchange.

These bars are avaiable for delivery to private buyers but are most commonly used by fabricators for the making of jewelry and the minting of private mintage bars.

These pieces are eligible for placement in an IRA.

It is best, however, to verify which bars are eligible with your personal plan.