In that period, Russian (Soviet Union) were used.
In 1992, when the Soviet Union became the Russian Federation, Tuva regained the status of Tuvan Republic and for a short time, they issued again their own stamps.
The Second Philatelic Period 1994-1995
|1994||50th Anniversary of Union with Russia||137-139|
|1995||Triangular Silver Provisionals||146-151|
|1995||Triangular Gold Provisionals||152-157|
|1995||Wild Tuvan Animals||158-165|
|1995||Wild Tuvan Birds||167-174|
|1995||60th Birthday of Dalai Lama||175-176|
|1995||50th Anniversary of Victory in WW2||177-180|
|1995||International Khoomey Symposium||197|
|1995||New Year 1996 - Last Tuva stamp||198|
|Tuvan Birds 1995 - not in my collection|
|Tuvan Horses 1995 - not in my collection|
Now, only the official Russian stamps are used in Tuva.
However ... Tuvan stamps can be found with a later date of issue ...
... to be continued...