Philadelphia, Pennsylvania. $5 1875. Fr. 401. The Keystone NB. Charter #2291. PMG Choice Fine 15.One of Philadelphias scarcest banks with just seven examples known, all of which are 1875 $5 series. The Keystone National Bank opened mid of 1875 and closed its doors in 1891 having only $1,760 outstanding in 1916. Of the seven notes known, this one would technically be the second finest only bested by an PCGS 45PPQ. Just one example has ever sold in public auction, which was in 2003 where a Good sold for $874.
