Why is 1970 quarter worth so much?

Could you explain why a 1970 quarter is worth so much more than other quarters from the same era? Is it due to a rare minting error, or is there some historical significance attached to it? Additionally, are there any other factors that contribute to its high value, such as its condition or the materials used in its production? As a cryptocurrency and finance professional, I'm intrigued by the potential value of this physical currency and would like to learn more about what makes it so valuable.