Hmmm...Stella's Art Deco treasures...and the mysterious coin purse.
I made a few modifications to the Mayfair coin purse, the one Rowan sat down with in The Witching Hour. The Roman coin is the middle one in the front, Augustus, from about 22 AD. At the top in the bag is a coin from ancient India.
The one tucked along the side outside the bag is of Alexander the Great from about 328 BC, making it Greek, or specifically, Macedonian. Finally, speaking of Macedonia, the coin next to Augustus' coinage is one like the coinage found at Taposiris Magna of Cleopatra VII.
If Lasher could scare up an emerald necklace, I'm sure he would have had no problem getting ancient coinage from the Hellenistic period.