HSB & Co Chicago Ruso 12Ga Single shot. Appears to be a model 107 made by J Stevens. 30" Choke Bored barrel, 44.5" overall.
Seems to function properly, could be a wall hanger or restored as a project. You will need to get a gunsmith to confirm what type of ammo its rated to shoot.
This was in an old East Texas farm house of a family member. Appears to be an early model and could easily be 100+ years old or pre-WW1. See photos for condition, missing buttpad, hairline crack in stock, rust patches in barrel and pitting, has "Jet" stencil on it.
Located in Clear Lake. $100 cash or trade for 200 rds brass case 5.56.
Message if interested i will reply shortly. Thank you!