Fake slabs are already being produced and used in China.
It is fun to speculate about promising technologies, but you should always keep in mind that it is impossible to predict the future. That goes for research also. About 40 years ago, turning coal into oil was said to be the technique that would solve the world's energy problem. Some 25 years ago, Time magazine ran an article on
hydrogen batteries and how oil would be superfluous in 10 years. Only a decade later, superconductivity would make trains floating and would eventually lead to cars, levitating and attaining incredible speed between Paris and Moscow.
But let us assume only for the sake of argument that in due time, nano-technology will become affordable and could copy coins. What would that mean? If the cost of copying coins would be x, all coins more expensive than x would be copied until their price had gone down to x. All depends on the value of x. If x is a million euros (in today's money), only some hyper-hyped US "coins" would be copied. Forgive me for not being worried. If x would be one euro, just about any coin could be copied, no new coins with a denomination of one euro or more would be issued and coin collecting would be destroyed. Tough, but if there is one lesson in history, it is that you cannot stop technology. A problem you can do nothing about is not a problem. It is a situation you will have to accept and live with to the best of your ability.
So why worry now? It's better to enjoy what fun the hobby gives you today.
Peter
