More than 100 items from the New York home of the late Donald L Taffner, a television executive, and his wife Eleanor, went under the hammer at Lyon & Turnbull in Edinburgh.
John Mackie, director at the auction house, said: "It was a fantastic atmosphere in a packed sale room with many of the bidders flying in from the United States and Europe, some leaving their private jets at Edinburgh Airport."
A number of lots were sold to overseas clients but many items will remain in Scotland, he added.
Mr Mackie said: "The result is a fitting tribute to Donald and Eleanor Taffner, who made an extraordinary contribution to Scotland's cultural heritage with their interest and promotion of the work of Charles Rennie Mackintosh and his circle. We are honoured to have been chosen to sell their collection and I am pleased it has done so well."
Included in the sale was a group of watercolours, including Bouleternère, painted around 1925-7 in the south of France, which sold for £65,000. The still life Yellow Tulips, from 1919, sold for £130,000 and will remain in Scotland.
A pair of mahogany card room chairs
made especially for Mackintosh's greatest patron, Miss Cranston, for her Glasgow home, made £46,000.
After the sale, Donald Taffner Jnr said: "It's an extraordinary collection put together over many years by my parents. My sister Karen and I hope the future owners of these works will get as much pleasure from them as our parents certainly did."
The Taffners brought a number of high-profile TV programmes to the American public, including Three's Company, Too Close for Comfort and The Benny Hill Show. They were also involved with British shows including My Family and As Time Goes By.
In 1996, they supported Glasgow Museums' Charles Rennie Mackintosh exhibition, which toured to New York, Chicago and Los Angeles.
In the same year Eleanor was awarded the prestigious Lord Provost's Medal for her contribution to the arts in Scotland, and in 2005 she was made an MBE.