Dreyer's Grand Ice Cream of Oakland said earnings per share would drop from 37 cents a year ago to between 21 cents and 24 cents in the quarter ended Sept. 26 . . . The Tokyo securities branch of BT Asia Securities, a jointly owned subsidiary of Bankers Trust New York Corp. and Exxon Corp., will begin operations today . . . Britain launched a new gold coin called the Britania in an effort to lure investors who want to buy gold bullion that's not from South Africa.