Byzantine coins are an acquired taste. These are not the coins you put on display to impress your friends. This one in particular has no portrait, no triumphant emperor gazing out from a field of bronze. The obverse gives you a monogram: interlocked Greek letters folded into a hieroglyphic knot. The reverse gives you a large E and a small K. That is all. The Coin Byzantine Justin II (565-578 AD). Kyzikos AE Pentanummium Obv: Monogram of Justin II Rev: Large E, K in right f