I asked a similar question back in February and if you are referring to the Angolan T34/85 with "9F1" painted on the turret, John Mooney wrote that this was added by South African forces after the tank was captured.
Here's the link:
http://www.network54.com/Forum/47209/thread/1234691128/Angolan+national+markings-
Good luck finding any information on post-war T34/85. I've also been thinking about doing either an African or Cuban one. It's really hard to find anything. There is a nice Czech website with some photos. Most appear in the Osprey book but they are larger:
http://www.militaryvehicles.cz/index3.php?sek=99-08
Hope this helps you,
Jeff