This is a proof on india paper from the Exchange Bank of St. Louis, MO. The pink, shown vertically in the middle of the note is from a rubber stamp, typical of proof notes, that states "Property Of The American Bank Note Company". This note came from the American Bank Note Company Sale of 1990 and is most likely the reason why it's still in pristine condition. This lovely note from the state of Missouri shows a beautiful vignette of Pilot Knob.
The portrait on the lower left is that of Louis V. Bogy (1813 - 1877) who was the bank's first president. (Source: Heritage).
$5 Exchange Bank Of St. Louis (Proof)
Image Contribution: Handini