Coins of Alexander Jannaeus from Siloam, 103-76 BCE

From CojsWiki

Four coins, including the one shown here, embedded in the plaster of the newly discovered Siloam Pool, show that the pool was in existence at the time of Jesus. All four date to the rule of Alexander Jannaeus, one of the later Hasmonean kings, who ruled from 103 to 76 B.C.

Hershel Shanks, “Pool of Siloam: Where Jesus Cured the Blind Man,” BAR Sept/Oct 2005.