The signed note was sent in 1960 to the family of Laurel's childhood friend Margaret Miller from Tynemouth who later married Laurel's school friend.
A private British buyer paid 1,400 pounds when it went under the hammer at Newcastle auction house Anderson and Garland yesterday.
It was only expected to fetch between 300 and 500 pounds, the BBC reported today.
A spokeswoman for the auction house said there had been "lots of interest" in the item from the star, which talks about his "many happy memories" of Tynemouth Pavilion.
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One line from the letter read: "The picture of the pavilion brought back back many happy memories of my early days - that was one of my favourite haunts. I used to often ride the sands on my pony, her name was Peggy."
Stan Laurel - whose real name was Arthur Stanley Jefferson - was born in Ulverston in Cumbria in 1890.
The comic actor later emigrated to the US where he found fame in Hollywood starring alongside Oliver Hardy.
Before emigrating, he spent much of his life in the north-east of England.