As Jesus looked up, he saw the rich putting their gifts into the temple treasury. He also saw a poor widow put in two very small copper coins. "Truly I tell you," he said, "this poor widow has put in more than all the others. All these people gave their gifts out of their wealth; but she out of her poverty put in all she had to live on." Luke 21:1-4
The coin referred to in this passage was the "half prutah," also known in Greek as the "lepton." Leptons were first minted by Alexander Jannaeus beginning in the year 103 BC. These coins were of very low value and were used only in the poor province of Judea. At the time of Jesus it took 48 leptons just to buy a loaf of bread.