Nonsense. Money by its economic definition is a medium of exchange.
Money is always the creation of a political entity.
No it isn't. The standard textbook economic definition of money is that which meets the following four characteristics. Money must be:
1. An accepted medium of exchange
2. Easily transportable
3. A store of value
4. A unit of account
Gold commonly fits this definition because it is (1) commonly accepted, (2) of intrinsic value and thus a store of value, (3) easily transported in small portions, and (4) a unit of account since its value is measured in its weight. Nowhere does it say anything about that gold having to be minted first by a government, nor would any credible economist make such a claim.
When I trade one baseball card for another it is not money.
Yeah, cause it's barter.