BTW.. Jan, I'm not sure but the 13-2-82 number seems to be wrong. If the pic posted by me above shows the tank , the starboard number should be reversed while the decals sheet includes two the same markings. Also if the 13-2-82 is assigned to the 5th Guards Armoured Corps there is a mistake made to the number. According to a russian source I found, from January 1944 to the war end the unit numbers for tanks of the GAC started with 5 then the next digit that was a code number of a brigade and finally the tank number. So the "2" is the brigade code of the 22nd GAB. However ,in the same year ( I mean the 1944 ), the markings were changed a little bit. The 22nd GAB got the three initial digits 5 22 ( sometimes they add dashes among digits ) and then the tank number. According to that the number should have been 5 22-13. What is more , following the info it could be 5 2-2-13. Because the first digit of the number from the left in the pic above isn't seen clearly the digit 8 there seems to be a guess only. I would say there should be the "5".
Back to the reversed number... Although Russians use the Cyrylic for writting , they start writting from left to the right like many other nations. As a result the number 5 2-2-08 seen on the port side of the cupola ( the shot in post #2941) , was the same for the starboard but started with the "5" beginning from the left. Just in the same way we can see in the image of the tank with the number ? 2-2-13.
In my opinion the correct number for your tank was the 5 2-2-13 and it should have been printed in the way it is written here beginning with the digit "5" at the left side. Unless there is picture of the 13-2-82 tank confirming the numer and that I'm wrong.