50 1818 Cincinnati Ohio Obsolete Currency Bank Note. 50 1818 Cincinnati Ohio Obsolete Currency Bank Note Bill. This note is dated December 1, 1818. This note was issued by The Miami Exporting Company. This is a tough to find issue.This bill is a must have for any collector of Obsolete Currency. If you have any questions please feel free to ask. All my items are exactly as described. Also feel free to browse my store for an extensive collection of National Bank Notes from all over the country! Thanks for looking and good luck!