SUPERMARKETS GENERAL <SGL> GETS UNSOLICITED BID Supermarkets General Corp said it received an unsolicited proposal from a third party to acquire the company at 41.75 dlrs per share in cash. Supermarkets also said it retained Shearson Lehman Brothers Inc to advise its board of directors on the proposal. Supermarkets General currently has about 38.5 mln shares outstanding. Its stock is currently trading at 34-1/4 on the New York Stock Exchange. The Woodbridge, N.J., supermarket operator of over 180 supermarkets and other specialty retail stores, convenience food stores and drug stores. For the nine months ended November 30, Supermarkets reported net income of 41.7 mln dlrs.