FWIW and just for the sake of discussion only...
A few years back, 4 or 5 maybe, my Pard & I would go to Gun Shows held at the Iowa state fairgrounds in Des Moines, Iowa, always a good one to attend and buy at. Several times we saw the same type of shotgun with the same type of 'badge' on it, the seller wanted an arm and a leg stating it was the 'real deal'. OK, two rows over another appeared with 'Indian Agent' nomenclature in the same 'badge' configuration. To good to be true? Perhaps, but they both looked far newer than could have been possible. Now, I'm no expert, but they would pass for a good prop or braggin' rights gun as-needed. The next time we went down the shotguns were not there, so take it as such. I always look but haven't seen one since, it might be a cyclical thing just like Trench Guns popping up every so often, some dealer got a good buy on an estate or old collection and is looking to make a good sale.
Best regards and good dealing!
'Ol Gabe