Rule Summary: Requires dealers to use reasonable diligence to ascertain the best market for the subject security and buy or sell in that market so that the resultant price to the customer is as favorable as possible under prevailing market conditions.

Rule Summary: Prohibits dealers from publishing false or misleading advertisements relating to municipal securities or concerning the facilities, services or skills of any dealer; establishes specific requirements for advertisements of new issues and municipal fund securities; and requires a municipal securities or general securities principal to approve in writing advertisements prior to first use.