The Beylik of Aydin was among the more aggressive of the Anatolian successor states to emerge after the Mongol fragmentation of Seljuk authority, and its rulers struck silver akçe partly to assert legitimacy in competition with neighboring beyliks. Isa b. Mehmed Bey's reign fell during a period when Aydin was simultaneously contending with Venetian and Hospitaller pressure along the Aegean coast — the same coastline from which Umur Bey had launched his famous naval campaigns a generation earlier. Coinage from this branch of the dynasty is considerably scarcer than issues from the main Umur Bey line.
The Beylik of Aydin was among the more aggressive of the Anatolian successor states to emerge after the Mongol fragmentation of Seljuk authority, and its rulers struck silver akçe partly to assert legitimacy in competition with neighboring beyliks. Isa b. Mehmed Bey's reign fell during a period when Aydin was simultaneously contending with Venetian and Hospitaller pressure along the Aegean coast — the same coastline from which Umur Bey had launched his famous naval campaigns a generation earlier. Coinage from this branch of the dynasty is considerably scarcer than issues from the main Umur Bey line.