‘Letters to the Front’ were crucial to soldiers who served in WWI, with the Army Postal Service representing the only way that Aussie diggers could stay in touch with loved ones. Honouring this invaluable service, this PNC features a unique 30.60mm Australian legal tender coin from the Perth Mint – a coin that is exclusive to this PNC! Beautifully illustrated, the limited edition has been set at just 10,000!