Diademed head left / Circular Sogdian legend around tamgha, ch'ch'n n'p'ch wnwn xwb ("Wanwan ruler of Chachan people"). 19mm, 3.37 grams. Smirnova -; Shagalov/Kuznetzov type 5-7 (#11-13); Zeimal fig. 6, 1-4. 

Alternative interpretation of the reverse legend exists, where "Wanwan" is interpreted not as a name but as a title "Victorious".

The Chach principality was a pre-Islamic political entity centered around the region of Chach, near present-day Tashkent in Uzbekistan. Existing from around the 5th to 8th centuries CE, Chach was a prosperous and strategically important area along the Silk Road, serving as a hub for trade between China, Persia, and the broader Islamic world. It was governed by local rulers known as ikhshids and maintained a degree of independence despite pressures from larger regional powers like the Sogdians, Turkic tribes, and eventually the early Islamic Caliphates. The principality was known for its wealth, fortified cities, and vibrant blend of Iranian, Turkic, and local Central Asian cultures. Chach's autonomy ended in the early 8th century, when it was gradually absorbed during the Muslim conquest of Transoxiana.