This is an original prop $5 bill as seen in the TNG episode 'Time's Arrow'.
These are shown being used in the episode by Data and Jack London.
It is made to look like a 19th century note, but is not historically accurate for the era.
The front of the bill is based on US currency from the 1860s.
The back of the bill is a modified copy of an old large sized 1923 US $1 bill.
