You can try, for example, following:
1. quit T-72, if running
2. MOVE the file "T-72_root_dir\DATA\Textures\INTERF\sd1interface.tga" to any safe location (outside T-72 dir-structure)
3. run T-72 & you'll see "CCCP" on gauges...
Technical note:
If the file "sd1interface.tga" is not found in "INTERF" subdir, then the default "russian" texture is used...