Fr. 747. 1918 $2 Federal Reserve Bank Note. Boston. PMG Very Fine 20. Dual Denomination Error.A remarkable item which is will highlight any advanced collection of error banknotes it enters. For this important error type only three Federal Reserve districts are currently known to have produced this Three Dollar, 1918 error. Boston, New York & Chicago are the three with known errors. All four notes from this sheet are known. Modest circulation still amazes us how it ever survived redemption. Overall an incredibly rare item which very seldomly will appear at public sale.