RE: Progression of MK Kits
It doesn't say that much.
The two big characters are New Year.
Then New product.
60 Enya II use great performance. 40 use high performance aerobatic planes.
Then the characters on the bottom has nothing to do with the plane but the hardware.
I think I had a custom built one that was given to me back in 1970. I was trying to find the picture of the plane today but failed.