2022 PNC - Wallal Centenary - Einstein’s Theory Tested in Australia

2022 Centenary of Einstein's Theory Tested in Australia $1 Stamp and Coin Cover (PNC) Australia Post – Royal Australian Mint (Issue 15)

• A Pivotal 20th-Century Scientific Breakthrough: Commemorates the centenary of the historic 1922 solar eclipse expedition to Wallal Downs Station in remote Western Australia, celebrating the groundbreaking international scientific effort that captured the vital photographic observations confirming Albert Einstein’s General Theory of Relativity.
• Exclusive 'Envelope' Privy Mark $1 Coin: Features an uncirculated $1 legal tender aluminium-bronze coin struck by the Royal Australian Mint, showcasing an intricate reverse design depicting the 1922 eclipse and celestial observations, distinguished by an exclusive "Envelope" privy mark unique to this Australia Post PNC release, paired with the Jody Clark effigy of Queen Elizabeth II on the obverse.
• Integrated Philatelic Presentation: Includes an official Australia Post MyStamps commemorative design cancelled with an official First Day of Issue pictorial postmark dated 8 September 2022 from Wallal Downs Station (Marble Bar WA 6760), presented on an authentic full-colour illustrated display envelope chronicling Australia's defining role in global physics.
• Strictly Limited Collector Issue: Released as official PNC Issue 15 of 2022 in the collaborative series between Australia Post and the Royal Australian Mint, restricted to a strictly limited mintage of only 7,500 units worldwide, making it an essential acquisition for science enthusiasts, privy-mark collectors, philatelists, and numismatists.
• Condition: Uncirculated coin in original presentation cover. Please note that minor handling or shelf wear may be present on the outer packaging.