2013 Australia 50C Birds of Australia Regent Bowerbird 1/2oz Silver Proof Coin with Original Government Packaging Proof Quality 99.9% Pure Silver Magnificent Regent Bowerbird Reverse Design Very Limited Mintage – 10,000 Australia Legal Tender Certificates of Authenticity Elegant Display Cases Elegant protective Display Case for all Five Coins Technical Specification: Silver Content (Troy oz) 5x 0.50 Monetary Denomination (AUD) 5x 0.50 Fineness (% purity) 99.9 Minimum Gross Weight (g) 5x 15.591 Maximum Diameter (mm) 36.60 Maximum Thickness (mm) 2.30 Designer Elise Martinson. 2013 Australia 50C Birds of Australia Regent Bowerbird 1/2oz Silver Proof Coin. Proof Quality 99.9% Pure Silver. Magnificent Heart Shaped Enduring Love unique Reverse Design. Very Limited Mintage – 2,500. Cook Islands Legal Tender. Elegant hear shaped display case. Numbered certificate of Authenticity. NGC certified highest grade. Minimum Gross Weight (g). Get images that make Supersized seem small. Showcase your items with Auctiva’s. Track Page Views With.