2004 $5 Fine Silver Proof Coin, 150 Years of Steam Railways in Australia. On 12 September 1854 the first steam-driven locomotive left Flinders Street station in Melbourne for Sandridge (Port Melbourne). This historic event marked the beginning of our steam railway network. Mintage 15,000. Certificate of Authenticity is included with this coin numbered 5366. *Note, booklet has a slight wave to it and doesn't sit flat.