The single malt was signed by the USA's President-elect to commemorate the opening of the Trump International Golf Links in Aberdeenshire.
Canadian Pilot Colin Plint, 57, paid £6,000 for the limited-edition whisky on Friday, only a week before the billionaire is due to be inaugurated into the Presidency.
He previously had no intention of bidding for the Trump bottle, of which only 504 were made.
And the 26-year-old GlenDronach was only expected to be sold at between £2,500 and £3,500.
But when introducing the lot, a cheeky McTear's auctioneer in Glasgow quipped : "This is a Trump International Golf Links bottling signed by some chap called Donald Trump.
"Never heard of him either. Apparently it's big news."
The whisky, which was distilled in 1985 and matured in a sherry cask, comes complete with authenticated papers.
Previously Laurie Black, a whisky expert at McTear's, said: "I suspect Mr Trump's imminent elevation to the position of 'Leader of the Free World' will have a significant bearing on the value of the 26-year-old GlenDronach.
"But the fact remains that this is also a quite stunning whisky in its own right."
The whisky was purchased following intense bidding.
Whisky expert Laurie Black said: "There was a huge amount of interest in the bottle and we were delighted with the final price, which was several times more than previous Trump bottles have sold for.
"The GlenDronach is a stunning whisky in its own right however, the Trump connection gave this particular bottle a presidential boost."
The Trump whisky was one of several high-profile whiskies to appear at the auction house's rare and collectable whisky auction.
A bottle of 52 year old Macallan 1950 fetched £10,000, while a bottle of the now legendary Black Bowmore from Islay, was purchased for £5,200.
Also appearing was an 18 year old Macallan which sold for £1,800, with all proceeds going to the Earl Mountbatten Hospice in Newport on the Isle of Wight.
The hospice looked after the mother of the seller, who worked as a chef at Macallan for 30 years.
Laurie Black added: "It was a fantastic sale with some truly outstanding whiskies.
"The prices achieved on the day reinforce the view that rare and collectable whisky continues to be a strong investment opportunity."
