Both are my favourite themes and I my thoughts were always in line with those translated.
Moreover, one of the main advantages of the NPM circulation coins that I appreciate most, is their legal easy handling, those are coins that have exquisitely numismatic value, they can command a high values but at the same time have the advantage of stamps - they are not under the law of PM trade and transportation, many countries have more or less strict laws on PM import/export and at some time it can change drastically, PM is really tasty piece for any goverment, while in trouble. And with $1000 CuNi coin only feww people know its true value.