Same source but a little more detail.
Quote:
"Cuzco hoard" in Peru In 2007 a metals refiner in Lima was presented with a nice surprise: One of his usual scrap-metal suppliers had secured a trunk full of silver coins, mostly 8 reales, all minted in Potosí and bearing the portrait of either Charles III or Charles IV of Spain, acquired from a lucky Cuzqueño who found the stash buried in the ground. Nearly all the coins were dirty and necessarily conserved, which revealed bright, high-grade luster on many of the coins. (source Sedwick Treasure Auction #5 April 2009)
"Cuzco hoard" in Peru In 2007 a metals refiner in Lima was presented with a nice surprise: One of his usual scrap-metal suppliers had secured a trunk full of silver coins, mostly 8 reales, all minted in Potosí and bearing the portrait of either Charles III or Charles IV of Spain, acquired from a lucky Cuzqueño who found the stash buried in the ground. Nearly all the coins were dirty and necessarily conserved, which revealed bright, high-grade luster on many of the coins. (source Sedwick Treasure Auction #5 April 2009)


















