Hello fellow coin collector. While "doodling" the numismatic internet I happened upon a coin I felt the desire to, some day, have. The coin I found could become the prominent coin in a desireable collection. The eye-catching, desireable coin is a 25mm proof Silver (0.9990 oz. ASW) struck (19,927 minted) to commemorate the 30th Anniversary of Australia's Decimal coins. Here's a photo courtesy of Rare Coin Company: https://www.rarecoin.com.au/product/808 I thought, "that's a nice coin to have." Then I asked myself, "What would make it better?" I answered, "Owning it plus one of each of those six 1966 decimal coins featured on the reverse running along the rim from 3-6 o'clock plus that predecimal 30.5mm Bronze Kangaroo-reverse Penny overlaid on the map of Australia. Photos courtesy of worldcoingallery.com: Bronze One Cent (1966-1984): http://worldcoingallery.com/countri...km62 1 Cent (1966-1984)&query=Australia km 62 Copper-Nickel Five Cents (1966-1984): http://worldcoingallery.com/countri...m64 5 Cents (1966-1984)&query=Australia km 64 Copper-Nickel Ten Cents (1966-1984): http://worldcoingallery.com/countri...65 10 Cents (1966-1984)&query=Australia km 65 Copper-Nickel 20 Cents (1966-1984): http://worldcoingallery.com/countri...6 20 Cents (1966-1998) &query=Australia km 66 Silver (0.3416 oz. ASW) 50 Cents (1966): http://worldcoingallery.com/countri...ia km67 50 Cents (1966)&query=Australia km 67 And here's a photo of that predecimal Kangaroo-reverse Penny: 30.5mm Bronze Penny (1938-1952): http://worldcoingallery.com/countri...m36 1 Penny (1938-1952)&query=Australia km 36 What do you think? clinker