If one were to look at silver/gold proof coins that are minted by/for/on behalf of the government, one could see that some coins would bear a face value, such as the 1/2 oz $25 American Eagle gold ...
I have looked around for this for ages and for obvious reasons, would be a very efficient means of paying bills without HMRC taking a cut (as long as I can't be attacked for Tax evasion). I have seen ...
And if so, are there reputable places to obtain the coins (i.e. a local bank, US mint website, etc.)?