Why is this OT? What we have here is classic American gun that is better built then many SxS clunkers discussed here.
Not sure how rare this gun variation is, but it would be more rare if it was marked 'Skeet' and had plain ribless barrel.
I can't imagine too many amigos wanted 16ga skeet gun with plain hollow tube.
Being a simple-mided sod I wouldn't mind finding one of them minimalist Mod 12 'Featherweights'. Extra parts and features just confuse me.