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EDINBURGH, Scotland — One of the world's most sought-after whiskies, a 60-year-old Macallan Valerio Adami 1926, was auctioned for a record $1.1 million on Wednesday.

The buyer was a private collector from Asia who bid by phone, auctioneer Bonhams said. The firm sold one of 12 other bottles with a label by the Italian artist Adami in May this year for $1.06 million.

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Such whiskies are collectors' items because of their rarity and will probably not actually be drunk, said Martin Green, whisky specialist at the auctioneer.

A 60-year-old bottle of The Macallan Valerio Adami 1926 was auctioned for a record amount at Bonhams in Edinburgh, Scotland, on Wednesday. Russell Cheyne / Reuters

"It's the Rolls-Royce of malts," he said.

"Obviously we don't know what will happen to it, but anyone who can spend around a million pounds for a bottle of whisky could afford to drink it. But it's an object of beauty in its own right — almost a museum piece."

Just 24 bottles of the whisky, bottled in 1986, were produced by Macallan, among the best-known Speyside distillers of Scotland's flagship product.

It commissioned Adami and Peter Blake, known for co-designing the album sleeve for the Beatles' "Sgt. Pepper's Lonely Hearts Club Band," to each design labels for 12 bottles.

It is not known how many of Adami's still exist. One is said to have been destroyed in an earthquake in Japan in 2011, and it is believed that at least one of them has been opened and drunk.