Fans of “Antiques Road Show” can take their own trash or treasures to St. Ann’s Episcopal Church in Bridgehampton on Saturday. The event, Antique Treasures, will allow participants to take up to three items that they simply love and want to know more about, or hate but have kept because Grandmother said it was of great value. Either way, for $30, attendees can learn the truth about their keepsakes, which can be anything from decorative and fine arts to jewelry, silver, and small antiques.