A renowned Chinese antique collector who was duped in Hong Kong’s biggest gold bullion scam is suing one of the alleged fraudsters for failing to return some of his prized porcelain collection.In a writ filed in the High Court on Monday, Kot See-for, a member of the elite collectors’ group Min Chiu Society, said businessman Tang Kwok-pang had not delivered the antiques or told Kot where they were – as ordered by the court in a May 3 hearing.Kot asked the court to order that Tang “be committed…