a vial of preserved blood

It looks like an old glass vial, whose surface has withstood the passage of time. It is almost full of a reddish fluid, which looks like blood - but which hasn't coagulated in the meantime.

It is a vial of preserved blood.
It weighs a few ounces.

You identify a vial of preserved blood.
It weighs four ounces, and it is worth about fifty busc.
Its keywords are vial, red, blood, and blood-vial.