This postal numismatic cover is highly collectable, featuring a pictorial envelope from the Sydney Opera House 50 Years stamp issue.

Australia’s most recognisable landmark, the Sydney Opera House was formally opened by Queen Elizabeth II 50 years ago on 20 October 1973. Acclaimed throughout the world, and recognised as a masterpiece of human creative genius, this extraordinary building was designed by Danish architect Jørn Utzon (1918–2008), following an international design competition. It was inscribed on the World Heritage List in 2007 as “a masterpiece of 20th century architecture”. The Sydney Opera House is also Australia’s number one tourist destination, welcoming more than 10.9 million visitors a year. It is also one of the world’s busiest performing arts centres, presenting more than 2,000 shows, 363 days per year, for more than 1.5 million people.