1864 Money order, check ?

From my grandmother's trunk, dated around 1864, what are these and how
were they used?

http://weaverfamily.com/patterson/al..._68_checks_144

They are signed by a homœopathic practitioners in Elizabeth N.J, the
family lived in Greene counry Pa. Are they payments (seems like a lot
of money for 1864 and there is no obvious family account on the paper)?

thanks
dick weaver

They look like standard bank checks of the 1860-1870 era.
Possibly they could be for business supplies or other
expenses or just money owed to people for whatever
reason.

The revenue stamps on them might have value but I
don't have expertise in that area to say what they might
be worth. I have seen checks similar to these sell in
the $3-$5 range.