2025 $1 225th Anniversary of Australian Proclamation 1oz Silver Proof Coin

The coin’s reverse design pays homage to the Spanish Pillar Dollar, also known as a peso. Under the inscription ‘VTRAQUE VNUM’ (both are one), the coin portrays the Spanish Crown and two hemispheres representing the Old World and the New World. These elements are surrounded by representations of the Pillars of Hercules, both draped in spiralling banners displaying the words ‘PLVS VLTRA’ (more beyond). It has been suggested that the s-shaped configuration of the banners around the columns explain the origin of the ‘$’ sign. Included in the design is a unique ‘Mo’ mintmark, indicating the coins origin from Mexico City.