CHICAGO - Two local antique dealers are looking forward to showcasing their finds at the Merchandise Mart International Antiques Fair, Oct. 2-5. Margaret Chung of Three Friends Studio is riding the market high for Chinese antiquities. Her stand will present a sandstone triad with a Buddha figure and two other figures from the Northern Qi Dynasty, 550-577, and a fantastic coffer decorated with paintings of auspicious symbols. Crescent Worth Art & Antiques is bringing a collection of whimsical Toby mugs...