Measuring 25mm across, the hand-beaten coins were identified as silver groats by auctioneer Gordon Brockman.

BBC: Richard II groat

Idowu's fourth attempt of 17.81m was a new personal best and enough to see off Romania's Marian Oprea, who won silver, and beaten favourite Teddy Tamgho.

BBC: Phillips Idowu wins European Athletics triple jump gold

Third seed Tsonga, an Olympic doubles silver medalist in London, was beaten 6-4 7-6 by fellow Frenchman Jeremy Chardy.

CNN: Murray powers on after Olympic gold medal triumph

That put silver in second place for the strongest commodity futures markets, beaten only by orange juice.

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