10ga 36" bbl

[Mills]

I agree with Eric. If PGCA has records for it, you would be well served joining PGCA and ordering a research letter on it. That is the kind of gun that could have been ordered by someone famous

[Gunner]

Wowza Rob.
I would really like to see what the barrel thickness of a 6 frame 10 ga looks like from the breech and/or the muzzle. It must be extremely thick if it weighs 15+ lbs.
I also suggest you double check your serial number, grade stamping if there is one.
Sorry I am no help when it comes to valuing this configuration.
Best,
Erick