SPRING BRIDE — The engagement of Miss Lu-anne Altmann and Gerard Preseher is being announced by her parents, Mr. and Mrs. Irvin Altmann, 1240 23rd St. N. Miss Altmann is a bookkeeper at Shopko, Inc. Her fiance, son of Mr. and Mrs. Ralph Pre-scher, 541 Saratoga St., is employed by Preseher Builders. A May wedding Is planned.