I'm curious how you could misinterpret my message so badly. I was referring to fiat in respect to counterfeiting (actually, all my post was about fiat). How are you really going to counterfeit a Central Bank (or MasterCard for that matter)? Regarding paper banknotes (which still can be counterfeited), I can only advise you to weigh your chances to sell (or buy, just in case), say, a home for cash.