US Stamps Scott#73 2c Jackson Used Error? Block on Cover Piece CTO Collectible. The item “US Stamps Scott#73 2c Jackson Used Error Block on Cover Piece CTO Collectible” is in sale since Sunday, May 17, 2020. This item is in the category “Stamps\United States\19th Century\ Used”. The seller is “boncbf2014″ and is located in Leander, […]