Let me ask you this, could this uniform be for Unit Skorpion or Bars? The reason I ask is because the sleeve patch, I think, is for the Border Guards.
Unit Scorpion is a border patrol force between Uzbekistan and Kyrgyzstan/Tajikistan and is made of specialy picked conscripts who after eighteen month have a choice, to go back to civilian life or continue their service. The name Scorpion was given to them by people from villages on both side of the border where they apeared during tensions of two countries.
If Scorpion gets the reserves from yesterday's civilians prety much like American Rangers, Bars doesn't. Bars consists of real veterans most of whom are mature men who have already seen a war in Afghanistan (1979-1989), in Chechnya or in numerios conflicts. Bars is stil a secret unit, and not much is known except a few TV reports and stories of those who served there. There also has been a rumor that even foreigners mainly from Russia have trained in the unit, probably in exchange of experience. What makes this unit so special is that they are trained in mountain warfare, their name Bars speaks for itself. Bars is big mountain cat. Members of Bars are professionals in many aspects, like alpenism, hostage rescue, sabotage, deep enemy line infiltration, and recon.
You are correct about the rank. I was wrong. It is for a Sr. Lt.
The collar pieces are not plastic. They are green painted metal.
As far as the name tape, I think this was done for the US soldiers who they would have trained with. It is doubtful many SF soldiers could speak Uzbek, so their name tapes would have been in English for ease of communication.
When US SPecial Forces soldier do training missions with foreign armies, they REGULARLY trade patches/tabs. It is possible that this was given to Sr. Lt. Yunusov after his training with USSF and he could have sewn it on.
From what I understand, the USSF soldier collected this on a training mission to Uzbekistan in the late 1990's/early 2000. It was called JCET. JCET stands for Joint / Combined Exchange Training Program. This is where USSF soldiers go to foreign countries and train with their armed forces.
Honestly, this uniform doesn't bother me in the least. The cap may have been traded for with another soldier other than the Sr. Lt. (very common with USSF soldiers). What I know is this, it is a very rare variation of the EG Strichtarn.