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The £2m sale on November 12 comprises 285 lots spanning the different collecting disciplines Katz has embraced across a 45-year career, with estimates ranging from £100 to £120,000. All lots estimated at £5000 or below will be sold without reserve.

"The art world is constantly changing, with the emphasis nowadays more on Contemporary art, whereas personally my taste has always been closer to the art of the ancient world up to the mid 20th century," said Mr Katz.

"I have traded from galleries in Jermyn Street and Old Bond Street and as the fashion houses with their deep pockets seek to have pre-eminence in Bond Street, we have decided to move to a townhouse in Hill Street, just off Berkeley Square, where we will continue to show works from antiquity to the 20th century. At my age I would now like to concentrate on fewer objects."

Mr Katz, 65, first became interested in works of art at the age of 18, educating himself in London's salerooms and institutions.