What is the most points that the Maserati 250F chassis scored in years after 1955?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT MAX("points") FROM "complete_formula_one_world_championship_" WHERE "chassis"='maserati 250f' AND "year">1955;