On the state flag of Uzbekistan

Uzbek S.S.R[edit]

The original emblem of the Uzbek SSR from 1925
On 13–15 February 1925, in the city of Bukhara, the first Uzbek Congress of the Soviets issued a declaration about the establishment of the Uzbek Soviet Socialist Republic. And 22 June 1925, the Central Executive Committee of the Soviets of the Uzbek SSR adopted a resolution No.67 Concerning the emblem and the flag of the Uzbek SSR, which temporarily, until the establishment of the Constitution of the Uzbek SSR. established the emblem of the republic.
The project of the emblem taken as basis of the final design consisted of depictions of uraq (a sickle) and a hammer criss-cross with the handles down and surrounded by a wreath of ears and branches of cotton. The red ribbon, surrounding the wreath, is adorned with the inscription Uz.S.S.R (in the Arabic script of the Uzbek Language and in Russian. A red star with a golden borders is located at the upper side of the emblem; the emblem is surrounded with the inscription, both in Russian and Uzbek, of the communist motto: "Proletarians of the world, unite!".^[1]
In 1927–1928, a series of reforms were made to change the writing system of the Uzbek Language into a Latinized alphabet, known as Yañalif, intended as a singular alphabet for all the Turkic Languages of the USSR. In accordance with this, the inscription on the coat of arms was altered, in order to reflect the current reforms. Furthermore, several smaller changes were implemented due to the secession of Tajikistan as a separate republic within the Soviet Union in 1929 and separation of the Tajik Soviet Socialist Republic from the Uzbek Soviet Socialist Republic.

Emblem of the Uzbek SSR from 1929 to 1937

On July 11, 1939, a decree was issued by the Central Government of the Soviet Union, as to alter the alphabets of several republics within the union into the cyrillic script. Thus, on 8 May 1940, the Uzbek script was changed from Latin alphabet, into the new Cyrillic one, based on Russian. On 16 January 1941, the emblem of the republic followed suit, and it too, switched its inscription from Latin script to Cyrillic. Hence, the coat of arms got a new insignia of «Ӯз.С.С.Р.» in the place of the old Latin one.
Emblem of the Uzbek SSR, as prescribed in the 1978 Constitution
Further down the line, in the new constitution of 19 April 1978, a new description of the emblem was given, which brought forth several alterations to the design. The article 178. read thusly:
Government Emblem of the Uzbek Soviet Socialist Republic consists of the hammer and sickle in the rays of sun, surrounded by a wreath, on the right consisting of ears of wheat and on the right, of a branch of cotton plant with flowers and open buds of cotton. On the top of the emblem is a five-pointed star and at the bottom, a part of the world globe. On the ribbon of the wreath are the inscriptions; Uzbek on the left: «Бутун дунё пролетарлари, бирлашингиз» and Russian on the right: «Пролетарии всех стран, соединяйтесь!». At the bottom of the two ribbons is the inscription «Ўз.ССР».
— Constitution of the Uzbek SSR (1978)
This version of the emblem survived until the Dissolution of the Soviet Union, when a new coat of arms, along with other state insignia such as a flag was adopted, for the newly independent Republic of Uzbekistan.