Not Alive.

Riddle: What is often used to be fair, often added up to be used as a sign of power, what has a head and tail but is not alive?

Answer: A coin.

Source: https://www.riddles.com/index.php/7648

What is often used to be fair, often added up to be used as a sign of power, what has a head and tail but is not alive? — Not Alive. by LilyABC v1.

Riddle: What is often used to be fair, often added up to be used as a sign of power, what has a head and tail but is not alive? Answer: A coin. — by LilyABC v2.