One last reply for now.
First, let me hit you up with some pictures of how colors of units for different countries varied in the early days of Hasbro/WotC/AH A&A.
Tanks of the United Kingdom, from A&A Europe/Pacific to A&A Anniversary. (Source: https://boardgamegeek.com/image/424344/) - See the source link for a listing of what piece is from which game.
Axis and Allies - Tanks of the United Kingdom, from A and A Europe/Pacific to A and A Anniversary
And finally, a couple shots of the rarest (non-mistake) pieces in A&A - RN County Class cruisers in Russian Red. These were only done for the first print run of A&A Anniversary. The next time Soviet cruisers were seen in an A&A game (A&A 1942, 1st Edition), they were replaced with Kirov-class cruiser.
First, a comparison shot of all of the cruisers from A&A Anniversary, 1st print. (Source: https://boardgamegeek.com/image/362555/)
All of the cruisers from A and A Anniversary
Next, a clearer picture of those rare Soviet County classes, aligned with the rest of the Soviet Navy in A&A Anniversary. (Source: https://boardgamegeek.com/image/399605/)
The Soviet Navy in A and A Anniversary
I hope that helps somebody.