'Shekel' in the Bible

If a soul commit a trespass, and sin through ignorance, in the holy things of the LORD; then he shall bring for his trespass unto the LORD a ram without blemish out of the flocks, with thy estimation by shekels of silver, after the shekel of the sanctuary, for a trespass offering:

And thy estimation shall be of the male from twenty years old even unto sixty years old, even thy estimation shall be fifty shekels of silver, after the shekel of the sanctuary.

If she is a female from 20 to 60 years old, then your valuation is to be 30 shekels, according to the shekel of the sanctuary.

And all thy estimations shall be according to the shekel of the sanctuary: twenty gerahs shall be the shekel.