A bump for you, and a tag for me cause I am hoping someone can say what the hell that monstrosity is
I've seen similar, but nothing H&R and nothing that matches that picture. My curiosity is piqued. Have you never fired it? If I were you, I'd hold on to it until you know exactly what the value is, etc. I've heard of people finding some rare collector's item's at yard sales, only because the seller wasn't quite certain what it is they were selling.
Wouldn't want to see you sell a $400 gun for $60.