Some notes were issued in 1837 by the City Of Philadelphia, PA. These notes were in denominations of 10c, 25c, 50c, $1, $2, and $3. Their rarities ranged from R4 - R7. Shown below is a 50 cent note dated June 23, 1837. It is an R7 note and although listed in Hoober, he does not list a description of this note in his book.
50 cents, City Of Philadelphia Loan, Pennsylvania (1837)
Image Contribution: Handini