MiG-15 UTI 'Midget' - Hungarian People's Army, 1972 - Eduard - 1:72 plastic aircraft model 

Thank you for the compliment! The cutout on the wing fence is actually the way it should look. The MiG-15 had a mechanical wing flap indicator (called a "soldier") on the left wing, which was just a black and white striped rod sticking out on the top of the wing when the flaps were down. It was however soon discovered, that the pilot couldn't see this indicator rod because of the wing fence being in the way. The solution was to modify the inner wing fence with a semi-circular cutout that would allow the pilot to see the "soldier". The flap indicator was only on the left wing and so the cutout was also on the left wing only.

@@tomsmodeltime6662 Thanks Tom for the explanation -I have learned something.. Have to remember that little titbit of info. :)