20 Lira Avar Khaganate

The Avar Khaganate ruled the Carpathian Basin from roughly 567 to 822 AD, extracting tribute from Byzantium at its peak and fielding cavalry armies that twice besieged Constantinople. Their eventual collapse came not from Byzantium but from Charlemagne's Frankish campaigns of the 790s, followed by internal revolt among subject peoples. The Turkish State Mint's decision to include them in a commemorative series reflects a broader official effort to link modern Turkey to a chain of Turkic and steppe polities stretching back through Central Asia — a project as much political as historical.