Opening its doors in February 1965, the Royal Australian Mint has produced more than fifteen billion circulating coins. The demand for proof and uncirculated versions of coins resulted in the Mint's expansion into producing high quality collectors coins, with their emphasis on quality systems and innovative technology continuing to this day. For 100 years, the Trans-Australian Railway line has united the east and west coasts of Australia, traversing the picturesque Nullarbor Plain. Now you can commemorate this momentous occasion with the Centenary of the Trans-Australian Railway Mintmark Set. Included in this set are four uncirculated $1 coins, each one marked with a different Australian city. Whether you're a coin collector or a rail enthusiast, you won't want to miss out on this incredible collectors piece. Centenary of Trans-Australian Railway Mintmark Set features: Designed and made in Australia. Crafted from aluminium bromide. Consists of four 2017 $1 uncirculated coins. Each coin is marked with the initial of a different Australian city. One is marked ‘C' for Canberra, one is ‘B' for Brisbane, one is ‘M' for Melbourne and the last coin is marked ‘S' for Sydney. Presented as a set of four in a limited edition collectors sleeve. Dimensions: 11.5cm (h) x 15cm (w).