Hello.

Please forgive me for not speaking Russian
There's was an article published in 2009 about how to distinguish MiG-21MF-75 from "early" MFs in the Czech modelling magazine Novinky.

http://img268.imageshack.us/f/sedivky1200dpi.jpg/
http://img3.imageshack.us/i/sedivky2.jpg/
http://img3.imageshack.us/i/sedivky3.jpg/
http://img219.imageshack.us/i/sedivky4.jpg/

Best regards.


Laurent