Century-old tax discs are selling for a fortune online.
Car tax discs were first introduced into the UK motoring market exactly 100 years ago in 1921.
Nowadays they can fetch a juicy amount of money for sellers, according to the motoring experts at LeaseCar.UK.
Drivers would display them on the inside front of their windscreen to prove vehicle tax had been paid.
And this law became legal in the UK on January 1, 1921.
But in 2014, the discs were phased out by the government in favour of moving towards a more digital way of tracking vehicle tax.
Now drivers have to pay for their tax online.
A spokesman for LeaseCar.UK said: “Many people find it fascinating to explore buying and selling websites to look at the variety of used car tax discs that are available today.
“These small round pieces of paper are an important part of our motoring heritage and it is particularly poignant that on the 100th anniversary of their introduction on our roads that car tax discs from as early as the 1920s are actively available to buy.”
The oldest car tax disc for sale on the site is described as “very rare” from 1921 with an expiration date of December 1923.
It has a price tag of £300 for it as the seller also has discs for sale from 1925 and 1927.
Another tax disc for sale from 1921 is described as from the “first year of issue” and also “very rare” with an expiration date of December 31, 1921.
It is said to be in generally good condition for the year and while there is minor damage, the disc is still readable.
People who collect old car tax discs are known as velologists and there is even a website dedicated to this pursuit.
On the website, some of the rarest certificates can sell for more than £1,000.
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Car tax discs which still have their borders or margins are said to be the most valuable.
The ones that remain in good condition are also quite popular.
Some sellers also flog sets of car tax discs spanning specific years of time, like a collection from the 1940s or 1960s.