Never heard of it.
Best bet is to hang it on a wall. Not worth more than 20-30 USD.
The Value of a gun is determined by it's age, make, condition of the gun and how desirable it is.
A hang fire refers to an older gun that used a small charge to set of the main charge. The hang fire is when just the smaller charge goes off.
a gun rack
if you hang yourself i doubt there would be a gun in your hand
The Restless Gun - 1957 Hang and Be Damned 1-19 was released on: USA: 27 January 1958
The value of a Symonds "Keeper Gun" 12 gauge hammer-gun is actually dependent on a number of things. Some of these things would be the age and condition of the gun.
who made the gun. how do you know it's a black powder gun ????
It depends on what condition the gun is in,markings on the gun,and what the history of the gun is.
Blue Book of Gun Values
You'll have to be a little more specific. Which Gun are you referring to?
Blue Book of Gun Values