Scarce Machin postal history cover, issued for Her Majesty Queen Elizabeth IIs Royal Visit to Brighton, with a Brighton Pavilion illustration. Contrary to normal postal regulations, 150 covers were postmarked with a combination of decimal and pre decimal Machin stamps with official Royal Mail Brighton E.Sussex K post office postmark dated 29th March 2001. A full 30 years after the stamps were demonitized, 150 of these covers originally existed, now mostly in collectors hands, they rarely become available for sale.