What gun is this

[Flintlock12]

A gun my dad had owned. Any idea the history of this gun? What it is? Looks like the Barrel was possibly sawed off.

 

[Grenadier1758]

Can you make out what is written between the stars on the top flat of the barrel? Perhaps a sprinkling of chalk dust gently wiped off may reveal the writing.

I agree, your rifle has the look of a cut down half stock trade rifle. The builder used a production Golcher lock.

 

[Flintlock12]

Do these look familiar? Almost looks like a 6 or a G for the first marking, then either a & or a U, and then possibly an H?