Patriot leader (1729–1824) in Philadelphia during the American Revolution and the secretary of the Continental Congress (1774–1789) throughout its existence. Although a lesser-known revolutionary—Thomson was the only person to sign the Dunlap Broadside of the Declaration along side John Hancock. Handwritten Bank of Pennsylvania check, 7.75 x 2.75, filled out and signed by Thomson, “Chas. Thomson,” payable to Abner Barret or Bearer for $20, March 2, 1822. In very good condition, with light scattered creases and soiling, a paperclip impression to the upper left, and expected cancellation cuts, slightly affecting the signature. RR Auction COA.