The Macallan Valerio Adami 1926 — dubbed the Holy Grail of whisky by connoisseurs — topped the previous best by about $45,000 (£35,000).
The UK-based seller had picked up the rare bottle direct from the Macallan distillery for $5,000 (£4,000) in 1994.
They knew it to be rare but decided to sell when another bottle of the spirit sold for $1 million (£814,081) — the record at that time — in Hong Kong in May. It was bought by a private telephone bidder from Asia during the auction by Bonhams in Edinburgh yesterday.
The auctioneers’ whisky specialist Martin Green said: “I am delighted at this exceptional result. It is a great honor to have established a new world record, and particularly exciting to have done so here in Scotland — the home of whisky.