The holder of a premium bond bought more than 50 years ago has scooped £10,000 - but they have not yet come forward to claim their prize.
It was purchased in Leicester 53 years ago, with the owner buying two bonds at the price of £1 each, Leicestershire Live reports. One of the bonds has now been picked as one of the January winners in the National Savings and Investment monthly prize draw.
The bond was purchased in September 1970, back when they could be purchased individually. There is now a minimum £25 buy-in with most monthly prizes paid directly to the winners. But high value prizes are paid differently.
NS&I's website says it usually pays winnings of a smaller value automatically. However if a prize is of £5,000 or more, they will send across a claim form in the post.
Premium Bonds are a savings account where the interest paid is decided by a monthly prize draw. Bond holders can put money in and withdraw money whenever they like and have the chance to win between £25 and £1 million tax free.
Much like the lottery, when you buy a premium bond you have the chance of winning the top cash prize. But according to Money Saving Expert, the likelihood of winning £10,000 is actually 1 in 390,578,009.
