Click to expand Tap to zoom 1840 Chesapeake & Ohio Canal Co. Washington, DC $20 Note Legacy VF-25 $150.00 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Aug. 9, 1840 $20 Note Issued by the Chesapeake & Ohio Canal Co. Washington, DC. Legacy Currency Grading Very Fine-25.