Peru switched from the Sol to the Inti in 1985, then in another round of monetary reform they switched to the Nuevo Sol in 1991.
This circulating commemorative coin is from the "Wealth and Pride of Peru" series and features two ceramic jars created by people of the Vicús culture, an important early culture in Peru that dates from 200 BCE to 600 CE. They are known for their work in ceramics, copper, and gold.
While the bank of Peru gives almost no information on these, I am reasonably sure they are "Whistling Jars" used to create music. Whistling jars are known in two types: one has two chambers, and the sound is made when the ceramic jar is tilted back and forth and the moving water inside forces the air around to create the sounds. The second type -- seen on this coin --has a single chamber and is played by blowing into it.
For more information, search for Peruvian whistling vessels on YouTube, or check out this short scholarly article.
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