Saint Petersburg, Florida. $5 1902 Plain Back. Fr. 609. The Alexander NB. Charter #12623. PMG Fine 12.This tough Pinellas County bank issued $5 Plain Backs exclusively. It issued notes for just under three years from January of 1925 to October of 1927 with a total emission of $501,100. Just a dozen survivors are recorded to exist from the bank. This example displays average circulation and darkly printed inks.