Did some research for you. 100 000 tons of mined gold in 1966 did not exist! The amount in dollars is near 2000 times SA GDP so if it did get and was spent SA GDP would have increased 200000%! It is more money than the 500 richest people on earth combined! 1 https://twitter.com/SimonPGrindrod/status/1385311717966684167

As of 2019, there was 197 000 tons of gold. 34 000 tons are in central bank vaults and 43 000 in verifiable investment holdings. 93 000 tons in Jewellery, So the gold even if deposited now would have been noticeable. All the world's jewellery cannot make up the 100 000 deposit. 2

$600 trillion in the SA banking system would be more than the total value of SA banks - in fact, the whole stock exchange. It would have been far more than the World economy the total amount in the world banking system or the total value of all the worlds stock markets 3

Just the interest earned at 1% would have added 7,5% to the world GDP every year. I am pretty sure we would have noticed. Even at $620 billion (1/1000th of claimed amount) in 2015, it would have been more money than any company on earth but for Google and Apple. 4

$620 billion would have earned $42 billion (@ repo rates) of interest per year, or 13% of SA GDP then. I think someone would have noticed either when buying other currencies or shares with that. Now times that with 1000. 5

If you think that what Tokyo says is possible and someone just gives that type of money away then... I have 95% proof vodka to sell you at $1 million a bottle from Engen in a coke bottle - collector's item...promise