Please forgive the poor quality scans. A friend sent them to me with some questions that I am unable to answer, so I'm posting them here in the hopes that someone can give him some answers. Here's the first: The coins have been in his collection about 40 years, and he doesn't remember where he got them. Here's what he told me: Athens, silver, obv. Athena head right, obv. ΑΘΕ with owl and olive branch. No problem there. The coin measures 22 mm (a little small), and weighs about 12.52 g (a little light). The coin is worn but it is not real bad As you know the Athens tetradrachm is about 17.4 g. 12.52 g would be ok for a didrachm (stater) on the Aegineton standard of 12.2 g. I suggested that he do a specific gravity test, and here is what he wrote back: 12.50 g dry weight 1.26 suspended weight 9.92 specific gravity .700 fine silver CNG coins of this type 22.5 -24 mm Coins of this type weigh 17.06 g, 1.61 suspended weight 10.59 sg .999 fine silver My weighing methods are probably primitive, but the silver content is low. Does anyone have any ideas about this coin? Unusual denomination? Eastern imitative?