ANTIQUES Roadshow expert and director of London auction house Bonhams Eric Knowles, whose newly published Discovering Antiques was recommended on this page some weeks ago, will be signing copies of the book next Thursdays from 6 p.m. to 8 p.m. at Hughes & Hughes in Dublin's St Stephen's Green Shopping Centre. Tickets for this event are available from the shop and guests attending on the night are invited to bring items, for Mr Knowles's examination and opinion.