1821 Guinea

[Guest shaun]

clearing my mother in laws bungalow today my wife came across a coin with the following markings on. One side has the words royal mint with a loin on top of a crown with the date below of 1821. On the other side is the words CUR Weight 58 and guinea. Can anyone shead some light on this coin and perhaps a rough value?

[Chris Perkins 228]

It's a coin weight. Made to check in comparison with an actual Guinea. They are usually brass, and were made by the Royal Mint. I'm not quite sure about value though, it depends as ever, on the condition. I would imagine a well used one would be of low value.