The museum described “Her Hakki Mahfuzdur” as “Turkey’s largest producer of postcards”.
However a Turkish diplomat on Twitter stated the saying means “all legal rights reserved” – and isn’t the a stationery company.
The British Museum responded: “Whoops! Thank you for pointing this out.”
The institution continues to be uploading pictures of its collection online throughout the coronavirus pandemic, and give people a method to access artefacts digitally during lockdown.
The postcard error was spotted by Kutluhan Celik, who works in the Turkish secretary of state for foreign matters in Ankara.
Euronews journalist Michael Daventry tweeted the British Museum to indicate the mistake.
The museum responded: “We take presctiption it. We are always searching to enhance our collection on the internet and know you will find couple of teething issues.”
However, the institution was criticised for that error.
One individual on Twitter stated the error was “pretty concerning for any museum of record”.
“Not only misunderstanding it and creating an erroneous catalogue entry, however extrapolating purely based on a person’s own catalogue this was the ‘largest producer of postcards’,” stated Dr Lisa Gilbert..