It is very difficult for me to answer
This is an M-2 in the original paint scheme. (red and silver)
This is an M-4A in its color scheme (very similar to the photo of the trivia)
And this is a restored M-2 ... which apparently painted it as an M-4 ...
The only one I'm sure is not is the M-3 ... because it's all white
Unless you can weigh the load and measure the engine hp it will be very difficult