Barnett Ross raised £11.4m at its July auction, selling 88% of the 41 lots offered.
In celebration of his call-up to the Great Britain 80s Tennis Team at the World Championship in September in Croatia, John Barnett sold lot 1 with a tennis racket instead of a gavel.
The next Barnett Ross auction will take place on 29 October at the Montcalm Hotel, 34-40 Great Cumberland Place, W1.
