The coin referred to in Mark 12:41-44 was the "Half Prutah", also known in Greek as the "Lepton". First minted by Alexander Jannaeus in 103BC. These coins were of very low vale 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. They were massed-produced, by casting the flans in strips and then carelessly striking the crude flaws with even cruder dies. Little attention was paid to their quality and most are far off center.