'Shekels of Silver' in the Bible

and fine him a hundred shekels of silver and give unto the father of the damsel, because he hath brought an evil name upon a virgin of Israel, and she shall remain his wife, he may not put her away, all his days.

then shall the man who lay with her give unto the damsel's father fifty shekels of silver, - and she shall be, his, wife, because he hath humbled her, he may not put her away, all his days.