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Palladium Hydrogenium
Graham, Thomas (maker)
Science Museum
London, United Kingdom
Pattern half-sovereign or trial piece, inscribed Palladium-Hydrogenium, [Thomas] Graham, 1869. 19mm diameter, in brown case 4x4x1cm. Obverse, head of young Queen Victoria. Reverse, inscription. Inside case inscribed in medal mount: This medal contains 173cc of 900 vols of hydrogen; palladium can absorb up to 900 times its own volume of hydrogen.
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Details
- Title: Palladium Hydrogenium
- Creator: Graham, Thomas (maker)
- Date Created: 1869
- Location: London, Greater London, England, United Kingdom
- Physical Dimensions: diameter: 19 mm, weight: 0.0354kg
- Type: medal
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