LONDON.- A monumental work by Sir Anthony Caro, described by the Director of Tate Britain Stephen Deuchar, as Britains most celebrated living sculptor, will be offered in the 20th Century British Art sale on the 9th March at Bonhams, New Bond Street. Caros work is currently taking centre stage at the Royal Academy of Arts Modern British Sculpture Exhibition in London. Conceived in 1976, the five metre, rusted and varnished steel sculpture entitled Lagoon is estimated to sell for £100,000 150,000. Caro is regarded as an artist who constantly pushes the boundaries of sculpture and throughout his career has endeavoured to create work that is truly abstract, without reference to anything else but itself. Through this exploration, Caro brought sculpture down to ground level by removing the traditional plinth. His sculptures are highly conceptual