The only known surviving Italian issue poster for the classic movie Casablanca has sold for $478,000 US in Dallas at a public auction of vintage movie posters.

The firm Heritage Auctions says the price ties a record for the highest amount paid for a movie poster at a public auction. The 1946 Italian poster — four years after the Oscar-winning movie was made and first shown in the U.S. — measures 1.4 metres by 2 metres.

It previously was owned by a collector in London. Auction spokesperson Eric Bradley says the buyer Saturday chose to remain anonymous.

Bradley said Sunday the price was equal to the record amount paid in 2014 for a poster for London After Midnight, a 1927 silent movie in which Lon Chaney played a vampire.