Half sovereign or trial piece, inscribed Palladium Hydrogenium

Made:
1869 in London
maker:
Thomas Graham
Half sovereign or trial piece, inscribed Palladium Hydrogenium Half sovereign or trial piece, inscribed Palladium Hydrogenium Half sovereign or trial piece, inscribed Palladium Hydrogenium

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Half sovereign or trial piece, inscribed Palladium Hydrogenium
Science Museum Group
© The Board of Trustees of the Science Museum

Half sovereign or trial piece, inscribed Palladium Hydrogenium
Science Museum Group
© The Board of Trustees of the Science Museum

Half sovereign or trial piece, inscribed Palladium Hydrogenium
Science Museum Group
© The Board of Trustees of the Science Museum

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.

Details

Category:
Coins, Medals & Tokens
Object Number:
1973-416/2
Materials:
hydrogenium and palladium
Measurements:
diameter: 19 mm,
weight: .0354kg
type:
medal and medal and medal and
taxonomy:
  • visual and verbal communication
credit:
Chemical Society