I just scored this one on GunBroker tonight. I am sure it will make a purist shake his head, but it is what it is.
It is a Winchester Model 12 which has been customized with total nickel plating and an 18 & 1/2 " barrel. The seller is within a short drive.
I have been wanting a Winchester Model 12 but not exactly in this configuration.
Here is a picture: