Hi Michael: Don take me wrong, but in the photos that I have of this machine of Kostylev, the shape of the theet are wrong in fact the third from the begining of the mouth is a spike not a theet.
The cone of the propeller is yellow not white, The badge of the Moscow guards is bigger as well as the star of the fuselaje and the withe fifteen...
Regards
Rodrigo
At least about teeth - the man who painted them did All teeth rounded, the usual photos of G. Kostylevs La it's after-war re-paint which used to be in Leningrad defence museum (it was disbanded in late 50-s as a @stalinist exposition@ ) No photos of war period are known to me.