Solid serials and million serials are each rare and keenly collected. A consecutive pair containing both, however, is almost certainly unique. This remarkable couple was discovered by a bank teller in the 1960s and thoughtfully set aside at the time. Their condition suggests they saw only the briefest circulation, with both notes displaying very light handling, teller flicks and delicate natural paper tone. If you are a serious banknote collector, Australiana connoisseur, or collector of singular numismatic rarities, these banknotes are an essential acquisition.