Aluminum Co. of America said it has...

Aluminum Co. of America said it has completed the sale of most of its real estate investments, including the landmark Century Plaza Towers, to a unit of JMB Realty Corp. The company said the sale will result in a $200-million after-tax gain . . . Starr Surgical Co. of Monrovia said it is spinning off to stockholders its Vision Sciences Inc. unit . . . First City Industries of Beverly Hills said its subsidiary, Scovill Inc., has completed the $90-million cash sale of its Hamilton Beach subsidiary to HB Holdings Corp., a subsidiary of Glen Dimplex Ltd., the United Kingdom’s largest manufacturer of electric heating and small appliances . . . Boston Safe Deposit & Trust Co.--a subsidiary of Boston Co.--was chosen as the master custodian for the California Public Employees’ Retirement System, the nation’s largest pension fund, bank officials said. . . . Times Mirror Co. announced it has completed its acquisitions of CRC Press Inc. of Boca Raton, Fla., and of Broadcasting Magazine and related publications from Broadcasting Publications Inc.