A preliminary proxy statement concerning MCA Inc....

A preliminary proxy statement concerning MCA Inc. was filed with the SEC earlier this week, but the identity of the filing entity has not yet been disclosed . . . Playboy Enterprises Inc. of Chicago said a federal bankruptcy court confirmed a reorganization plan for Atlantis Hotel-Casino in Atlantic City, N.J., that gives Playboy a 13.7% non-voting equity interest in the property . . . Baker Hughes Inc. of Houston reported that the number of working oil and gas rigs in the United States fell by eight this week to total 935. A year ago, the count totaled 748 . . . New York-based Avon Products Inc. said it has adopted a new preferred share purchase rights plan that “provides protection against creeping acquisitions and other abusive takeover attempts.”