Catalog

Coins

Browse 20 matching coins.

Country Australia (14) United Kingdom (5) South Africa (1)

Era Modern (16) Mid-Century (3) Pre-1933 (1)

Series Science Explained Sovereign Silverback Gorilla Koala American Eagle (351) Lunar (84) Maple Leaf (55) Libertad (43) American Buffalo (38)

Type Numismatic (8) Semi-Numismatic (1) Bullion (1)

Grade Brilliant Uncirculated (10) Proof (5) Ungraded (4) Mint State (1)

Year 1925 2002 2012 2017 1991 2011 2026 (9) 2025 (7) 2024 (6) 2023 (4) 2022 (3) 2021 (2) 2020 (3) 2019 (3)

Weight 1/10 oz (3) 1/4 oz (4) 1/2 oz (3) 1 oz (7) 2 oz (1) 10 oz+ (2)

IRA IRA Eligible (13)

20 coins · showing 1–20

Active Science Explained Sovereign Silverback Gorilla Koala 1925 2002 2012 2017 1991 2011 Clear all

Fair Market Value — each price is the live metal spot price plus a numismatic premium, spot updated Aug 6, 2026 04:23 UTC. It is a reference valuation, not a dealer buy or sell quote.

Gold

2012 Australia 1/25 oz Gold Koala Proof (No Box/COA)

2012 · 0.0400 troy oz · .9999 fine

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Gold

1925-SA South Africa Gold 1/2 Sovereign BU

1925 · 0.1177 troy oz · .9167 fine

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Gold

2011 Great Britain Gold Sovereign BU

2011 · 0.2354 troy oz · .9167 fine

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Gold

2017 Great Britain Gold Sovereign BU

2017 · 0.2354 troy oz · .9167 fine

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Gold

2012 Tristan Da Cunha Gold Dble Sovereign Regent & Lion PF-69 NGC

2012 · 0.4718 troy oz · .9167 fine

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Gold

2012 Australia 1/10 oz Gold Koala Proof

2012 · 0.1000 troy oz · .9999 fine

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Platinum

1991 Australia 2 oz Proof Platinum Koala

1991 · 2.0000 troy oz · .9995 fine

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Gold

2012 Australia 1 oz Gold Koala Proof (High Relief, Box & COA)

2012 · 1.0000 troy oz

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Silver

2012 Australia 1 kilo Silver Koala (Light Abrasions)

2012 · 32.1500 troy oz · .999 fine

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Silver

2011 Australia 1 oz Silver Koala MS-70 NGC (First of 20,000)

2011 · 1.0000 troy oz · .999 fine

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Gold

2011 Tristan da Cunha Proof Gold Double Sovereign Royal Wedding

2011 · 0.4716 troy oz · .9167 fine

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Platinum

1991 Australia 1/4 oz Platinum Koala BU

1991 · 0.2500 troy oz · .9995 fine

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Gold

2012 Great Britain Gold Sovereign Diamond Jubilee BU

2012 · 0.2354 troy oz · .9167 fine

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Silver

2011 Australia 1 oz Silver Koala MS-69 NGC (First of 20,000)

2011 · 1.0000 troy oz · .999 fine

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Silver

2012 Australia 1 kilo Silver Koala BU

2012 · 32.1500 troy oz · .999 fine

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Silver

2012 Australia 1 oz Silver Koala BU

2012 · 1.0000 troy oz · .999 fine

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Silver

2012 Australia 1/2 oz Silver Koala BU

2012 · 0.5000 troy oz · .999 fine

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Platinum

1991 Australia 1 oz Platinum Koala BU

1991 · 1.0000 troy oz · .9995 fine

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Silver

2011 Australia 1 oz Silver Koala SP-69 PCGS

2011 · 1.0000 troy oz · .999 fine

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Silver

2011 Australia 1 oz Silver Koala BU

2011 · 1.0000 troy oz · .999 fine

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