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The jar, dipped in 18ct gold, is up for grabs in a treasure hunt.

Fans of the “love it or hate it” treat have to download app Snatch for a chance to win.

It uses the player’s smartphone to create an “augmented reality”.

Players then compete to find real prizes in their interactive world.

(Image: JAMES NORTH)

(Image: GETTY)

A spokesman for Marmite said: “The world’s most expensive jar of Marmite has been unveiled, created for those who were born lovers of Britain’s most divisive yeast spread.

“The iconic British brand has created the oneoff luxury item to honour its Marmite-loving fans.”

People will be able to win the expensive golden jar, valued by Boningtons Auctioneers, along with 1,000 other special jars.

The contest begins today and runs until Sunday.

A study found Brits are genetically predisposed to loving or hating the top-selling spread.