Bidspirit auction | (4) 1991 United States USO
(4) 1991 United States USO Silver Dollars - (4) 1991 United States USO Silver Dollars, including (2) uncirculated .90 silver, , and (2) proof .90 silver dollars, with original packaging and C of A
(4) 1991 United States USO Silver Dollars - (4) 1991 United States USO Silver Dollars, including (2) uncirculated .90 silver, , and (2) proof .90 silver dollars, with original packaging and C of A