'Pieces Of Silver' in the Bible

went to the chief priests and said, "What are you ready to give me for betraying him to you?" So they weighed him thirty pieces of silver;

Then when Judas, his betrayer, saw that he was condemned, he repented and brought back the thirty pieces of silver to the chief priests and elders.

Then was fulfilled the word spoken by the prophet Jeremiah. And I took the thirty pieces of silver, the price of him who had been priced, whom certain of the Children of Israel had priced;