This plane is not a 51. It is not upside down. High wing monoplane with what looks like a rather long greenhouse with what could be a rearward firing machine gun ,
BTW, In the late 60’s I had a collection of 1/72 scale models of WWII aircraft. I had over 150 of them. There were even a lot of Italian and Soviet aircraft in my collection. I was sort of a nut on WWII aircraft. I still am, somewhat, to this day. I’ve put hundreds of hours in in the cockpit of various WWII fighters (mostly Spitfire Mark XI) on online gaming. If I was not at work I was going to pull out some of my books. But you and I seem to be the only ones that believe it is not upside down and is a high wing monoplane.
Maybe a B-24.
Just kidding. ;-)
LOL! I have been an aviation nut since I was a kid.
I was up in downtown Bath, Maine last week, and I heard a distinctive sound...only one kind of engine makes that sound, a reciprocating engine, and...there was more than one!
I swiveled my head around expecting to see some twin engine plane, but it was a P-51 Mustang and an F4U Corsair flying together, about a thousand feet up heading in a southwesterly direction!
I nearly killed myself trying, but just couldn’t get my phone out. I have no idea what they were doing or where they were going...it was Tuesday or Wednesday.