It's definately a Piaggio P.108, but the nose turret (usually above the bombadier) is gone on this version. The transport version has the glass nose and turret removed...
Thanks for that image to compare the P108 with the B-17...I can see some similaities there too. And now i can see the remote gun turrets on the outboard engines; I wonder how well those worked?
Derek
Sorry, the right image is not the aforementioned but this one:
The cause of the accident was a typical landing stall, even if Bruno Mussolini was a very experienced pilot.
"The cockpit section was separated from the rest of the aircraft and Bruno Mussolini died of his injuries. The machine did not catch fire but was nevertheless totally destroyed in the impact. Five members of the crew were injured and three were killed. Bruno was one of the three killed." (From wiki)
Piaggio P.108 Prototype MM.22001. with the green and ochre camouflage. Guidonia, 1940
A P.108B, without the front turret:
Piaggio P. 108B. Night training at Guidonia airfield, waiting for the first war mission on Gibraltar of 28 June 1942