American Financial and its chairman, Carl H. Lindner, increased their holdings in Aaron Spelling Productions to 10.2% from 7.7% of the Class A common stock . . . Standard Oil Co. said its wholly owned subsidiary, Kennecott Corp., has agreed to sell its interests in copper mines in New Mexico and Arizona for about $220 million . . . The Agriculture Department said the nation's tobacco farmers will harvest a crop of 1.22 billion pounds, 19% less than last year and the smallest crop since 1936 . . . Dayton Hudson said its board adopted a shareholder rights plan designed to thwart unwanted takeover attempts; the retailer said it is not aware of any such attempts planned for the company . . . Coldwell Banker Commercial Real Estate Services announced that it has been appointed by Wells Fargo Bank as its exclusive agent for the disposition of certain duplicative Wells Fargo and Crocker banking facilities in California . . . Chrysler said its stock will begin trading on the Tokyo Stock Exchange beginning Sept. 19 . . . Don A. Sanders, an executive vice president of E. F. Hutton in Houston, said in an SEC filing that he has bought 5.44% of the outstanding shares of Aca Joe, a San Francisco-based apparel retailer, for investment purposes.