Major responsibilities of the Mint include all of the following EXCEPT:

The Mint's major responsibilities primarily revolve around the production and distribution of currency and coinage for the United States. One key responsibility is the manufacturing and selling of platinum, gold, and silver bullion coins, which supports the nation's monetary system and serves investors looking for precious metals.

Additionally, the Mint is tasked with distributing U.S. coins to the Federal Reserve banks and branches, ensuring that these institutions have the currency needed for various financial transactions. Another important responsibility is receiving, redeeming, and processing mutilated coins, which allows for the reclamation of value from damaged currency.

While education for collectors on rare coins is beneficial and may be supported by the Mint through various programs and resources, it is not a fundamental responsibility of the Mint compared to the core functions of coin production, distribution, and processing. Thus, education in this area is not a primary duty of the Mint, making it the correct choice in identifying what the Mint does not primarily oversee.