Keep in mind that the collapse of a financial system has historically unfolded to different degrees. If we are talking about a Dark Age, then you are into the Mad Max situation. Then the only thing that has value is food – not even gold. That was the fall of Rome. People effectively sold themselves as serfs to work the land, retain 20% of the crop in return for protection behind the castle walls. Medieval coinage really appears only in silver and are rarely found more than 20 to 30 miles from where the coins were struck. This illustrated the isolation  of city states. Money was not really necessary for there was really no major trade interacting within Europe – hence the Dark Age.
In order for tangible assets like stocks, gold, art, antiquities, etc. to survive, the fundamental infrastructure must survive. That means there must be ample food for gold to have any value whatsoever. So you must stop short of the Mad Max event for anything tangible to have a safe haven value.

Therefore, if we are only talking about a reset of the world financial system, then tangible assets retain value that becomes translated into the new currency. Hence, equities will survive, government debt and currency will not. Only going all the way to a Mad Max event would everything lose value except food. Not even gold survives for trade comes to an end.

The civil unrest we have beginning today post-Trump is intended to overthrow Trump and Obama has remained in Washington, which NO PRESIDENT has ever done. We have Soros licking his lips on the prospect to altering the USA with his vision of Marxism. We have the same trend emerging in France, Britain, and Netherlands and of course Italy, Spain and Greece.
So we have some actors intent upon creating change that would subjugate all of us because they think Marx was correct after all. Their desire is to live vicariously off of other people’s money and they do not accept that anyone should have things they do not. We have students protesting because they think everything should just be free. Hence, this is a battle shaping up for the future; the final conflict over Marxism, which began with the fall of Communism in 1989. This final battle began 26 years from 1989.95.

My response is that open source is destroying the need for the nation-state. Open source is a paradigm shift which creates an Inverse Commons which does not suffer the Tragedy of the Commons prisoner's dilemma...

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So into Stage #5 we go, and cull all this useless dead weight left over from the Industrial Age.