According to 'Spinks', a dealer would sell you an uncirculated 1930 penny for £70 and one in circulated but 'Very Fine' condition for £5. Bear in mind that British Grading of coins is different to that of the USA. I Britain, for a coin to be classified as 'Uncirculated' it should be part of a proof set, or in a sealed capsule from the time it was minted and untouched by human hand.
Why don't you post some pictures of it and all of us here can have a go at grading it. It's always great fun because people's opinions vary and you can usually guarantee at least one call for pistols at dawn!!
Hope this helps.
Frank