No info for you, but it looks like a nice gun. Is it local? I'm in Sherborn, not too many places with doubles in our area.
StormsGSP - yes, I am one town over. SxS pickings are little thin in this part of the world - Robin Hollow has some nice guns, but their pricing tends to be umm optimistic. Otherwise, you need to be prepared to drive a few hours to New Britain (more optimistic pricing) or to one of the Cabela's. It is one thing to buy a Beretta online but buying a gun like this online is definitely more challenging.
Gunman - thanks for that input. It does seem a rather odd bit of engineering.
Barrel Browner - I checked Chard's website. No Hintons (but some other unusual guns).