Great Britain has so far won five gold medals at the Tokyo 2020 Olympics - but these trophies are worth far less than you might expect.
Olympic gold medals are some of the most sought-after objects in the world, with many athletes dedicating their entire lives to winning one.
But an Olympic gold medal is only worth around £540, according to expert Richard Gladdle of Baldwin's Auctions.
At least, that's the bullion value - how much the metal is actually worth.
That's because the current gold medals are actually mostly made of sterling silver, with a gold coating.
Gold medals are made of 550g of silver, with a 6g coating of gold.
Silver medals are comprised of 550g of the metal, and are worth about £297 if you melted one down.
Bronze medals are made of an alloy of copper and zinc, and are worth almost nothing - less than £5 each.
So far this year Great Britain has won five golds, six silvers and five bronzes.
The gold medallists are swimmer Adam Peaty , divers Tom Daley and Matty Lee , mountain biker Tom Pidcock and swimmer Tom Dean.
In total, the British medals are worth around £4,500 for the lot.
But the real value of Olympic medals is shown when they come up for sale, when they can be worth hundreds of thousands of pounds to the right buyer.
They are not sold very often, due to their keepsake value to athletes.
Gladdle said: "These very rarely come up for sale, but it does occasionally happen, perhaps to raise money for charity."
The current record price for a gold medal at a public auction was $1million in 2012, or around £720,000 currently.
This was for a medal won in the 1996 Atlanta Olympics by Ukranian boxer Wladimir Klitschko, seen as one of the best heavyweight boxers of all time.
Not only that but 1996 was the first time Ukraine entered the Olympics as an independent country, as it broke away from the former USSR in 1991.
The money went straight to Klitschko's charity, the Klitschko Brothers Foundation, which helped children with education and sport.
But Klitschko wasn't without his medal for very long, as the buyer gave it straight back to the boxer as a sign of respect.
Gladdle said the winner of the medal makes a huge difference to the price. Valuing the medals is notoriously hard, but they tend to sell for between £60,000 and £300,000 unless the athlete is well-known.
In 2015 Baldwin's sold a gold metal from the 1912 Stockholm Olympics for just £19,000, or around £25,000 when buyer's costs were added in.
The gong was won by a little-known athlete, Nils August Domingo Adlercreutz, for a horseriding event called Equestrian Team Eventing.
But the medal was extra-special for two reasons - 1912 was the first time horses featured in the Olympics, and it was the last time Olympic gold medals were made of pure gold.
After the ravages of World War One, countries swapped to making silver medals with a layer of gold on top.
Around 2,400 medals are given out at a modern Olympics, and it is the responsibility of the host country to make them. The bill is normally around £700,000.
Great Britain is currently sixth on the medals board, with the top place secured by host country Japan.
