CANADA. Bank of British North America. 4 to 10 Dollars, ND. P-S411, S412, S413 & S426. Back Proofs. About Uncirculated. 4 pieces in lot. A grouping of back proofs for this early series of Bank of British North America notes. Denominations include 4 Dollars, two 5 Dollars, and 10 Dollars. P-S412 5 Dollars is found with paper loss in the top right margin, P-S413 10 Dollars is found with paper loss in the top left margin, andP-S426 5 Dollars is found with a large tear nearly splitting the note in half, with another small tear noticed as well. Mounting remnants and printers annotations are found on all.