Russia?
If 100% of the Tsar documents had survived, I might have had a clue Clint.
As it is right now, I don't know.
It seems both the Army and Navy had some kind of record system, and now and then you can see it on the aircraft.
Unfortunately visible signs are very rare so you have to rely on the source and accept they "know"
There is a quite good four volume series of Camo and Markings published, but I have not tried to do anything "useful" with the info yet....too busy covering your tracks....
Cheers
Stig