Dornier Do217.

The extended tail was an airbrake.

In my honest opinion I think the patina of the model is perfect.

Its showing its age well

Surely from that end it would be proctologist rather than a dentist.

Rosevidney1: As you say in post #6 this isn’t a windtunnel model. I would go so far as to say its is purely for display.

I do not think the large recesses were experimental and actually made it onto production aircraft. But here its sadly a case of looking at grainy images.
The last picture on the Tangmere Military Aviation Museum website. But this aircraft looks like the prototype posted my Longshot just above. And I overlooked what was slung beneath it: is that a torpedo -it looks a bit chunky- or an external fuel tank?)

The picture on the Wikipedia page also seems to show this.

And Scotavia has provided link to Brigand Boys and if you look at the top of the page, the squadron assembled before a Brigand, and I can just make out the two large recesses instead of four.

It even appears in the old Valom Brigand B1 model kit. Okay, being Valom accuracy is hardly consistent, but I doubt it would be modelled after an unbuilt prototype.

Longshot: That puzzled me since you brought it up and maybe it was a model experimental instillation of a heavier calibre weapon or it was a simple error in the model.
This is what I assumed all Brigand gun instillations were like: [ATTACH=CONFIG]260637[/ATTACH]

Though that isn’t what all Brigands were like. In the last image on the Tangmere Military Aviation Museum webpage on the Brigand you can just see a larger recess. (As a side note they seem to have forgotten about the fuselage of RH746 now currently in store at Cosford).

I don’t have anything on the Brigand at home and good images of the underside of Brigands seems to be thin on the ground online.
(The most clear images I have found are on the WarThunder website. No idea how accurate that is mind.)

However I recall that there was a problem with the guns on the Brigand and Wikipedia (I know) does shed light on that:

An accumulation of gases in the long cannon blast tubes, which ran under the cockpit, were igniting through use of high-explosive shells. This in turn severed hydraulic lines, which would burn, so that in effect the Brigands were shooting themselves down. This was cured by drastically reducing ammunition loads and using only ball rounds

Looks like the model shows a modification to prevent the accumulation of gas in the cannons.

Which would suggest to me that the model was made well into the service life of the Brigand (and well past the point anyone would have thought it likely to be used as a torpedo bomber)

As long as that Floridian gent has a big enough shed to keep a Mars. That’s a big plane to tie down in a hurricane.
And reading the link that seems to be the reason why Pensacola has stepped back.
“They just have higher priorities where they want to spend their money and time. They didn’t have the budget to build a hangar to store the aircraft,”

So what if aircraft aren’t mentioned. its just a quick news article and it’ll hardly list every type of artifact held at Wroughton.