Painting and weathering :

auuu! odličan!

and since i'm from balkans just a friendly advice... get a lawyer asap..
wouldn't be surprised if someone sues you for copying his artistic expression of vandalism

If this one really took part in the movie then they must have added some stuff back after taking part in the movie. Sometimes movie directors can be picky like that.

None of the 3 had a gun travel lock, the .50cal machine gun pintle on the turret of Oddball's was longer, none had torsion bars on the engine deck doors and there seems to be a patch of applique armor on the turret. It does look to have the correct T54E1 track that Oddball's M4A3 had, one rear mudflap and the commander's hatch is correct.

all tanks in movie had damaged paint on barrels from gun travel lock so at some point they had them. But position of damage is different on movie/present photos...
http://oi61.tinypic.com/2m47lz7.jpg

movie tanks look like they didn't had turret right side plate:
http://i56.photobucket.com/albums/g169/ncc1984/screencap643.jpg~original
good eye might get serial numbers of gun gun mantlets

Odball's tank had one row of holes:
http://www.podwits.com/wp-content/uploads/2012/03/kellys-heroes-2.jpg

Looking at the paint damage it had to have been on the engine deck behind the engine doors. A picture of an M4A3 that just left the conversion plant with YO codes on the hull seems to confirm this.

That would have been D68454 and the Formations conversion has it on the wrong side of the mantlet missing the triangular symbol at the same time. Weird thing is this 1/35 Sherman does seem to have the right arrangement of roadwheels that were on Oddball's Sherman.

Look at the very bottom left of this photo... it does have a travel lock.

http://s56.photobucket.com/user/ncc1984/media/screencap643.jpg.html

yes but that's the small rear one, abandoned sherman has the big lock in front...