As noted, I see a number of issues with this shotgun. It is a shame, that in the current collecting market, new collectors are being led astray by unscrupulous sellers representing put together guns as "original examples", and because there are so few truly original and correct guns being offered, they buy them. You should do your homework BEFORE you make the purchase, not after you have sent payment and the item is on the way to you. My recommendation on this particular shotgun would have been to keep the $1500 in your pocket, continue to save, and buy a real gun when the opportunity presented itself.
Just for kicks, when you separate the barrel from the receiver, how many *** do you see?
"There's a race of men that don't fit in,
A race that can't stay still;
So they break the hearts of kith and kin,
And they roam the world at will." - Robert Service