Some 25 of the Republic's best-known dealers will be participating in a preChristmas Dublin antiques and fine art fair today and tomorrow at the RDS. Running from 11 a.m. until 7 p.m. on both days, the event will be attended by Jonathan Beech of Westport, Co Mayo, who is bringing a large number of long-case grandfather clocks; Clancy Chandeliers of Bray, Co Wicklow; and Dublin's Patrick Cooke, who plans to concentrate on French, small, occasional furniture. Regional dealers include Ivy Hall Antiques of Birr, Co Offaly, MacHenry Antiques from Co Antrim, Galway's Maguire Antiques and Moycullen Village Antiques, Adare's Carol O'Connor and George Stacpoole and Uppercourt Manor Antiques, which has an outlet in Co Kilkenny as well as Dublin. There will also be a strong presence by the capital's dealers, such as J. & W. Duvallier, Fullam Antiques, John Farrington, Norah Lucey, Roxanne Moorhead, Oman Antique Galleries, Helen Scannell and Esther Sexton.