'Pieces Of Silver' in the Bible

and said, What will ye give me, and I will deliver him unto you? Then they placed before him thirty pieces of silver.

Or what woman having ten pieces of silver coin, if she lose one of them, doth she not light a lamp, and sweep the house, and make diligent search until she find it?

And many of those who practised magical arts brought the books, and burned them before all men; and they calculated the prices of them, and found them worth fifty thousand pieces of silver.