Watch List notes:

USA Half Dollar 1892 Proof Breen 5043 UNC with a most attractive colourful tone, Extremely Rare with a mintage of just 1245 pieces. This and the other two Proof coins from a provincial sale also containing items from the estate of McCormick believed to be descendants of the McCormick family of International Harvester of Chicago, major exhibitors at the Columbian Exposition of 1892, so would explain how he obtained these Proof pieces

Estimate: 2000-2500 GBP