In 1821, the city of Palma on the Spanish island of Mallorca was affected by an epidemic of yellow fever. Officials established quarantines to prevent the spread of the disease. To facilitate local trade while the island was under quarantine, the city of Palma authorized the mintage of a small number of silver coins by a temporary mint set up in Bellver Castle. The castle still stands today. The large silver coins were apparently made from silver taken from local churches.
The obverse shows the Latin script, “SALUS POPULI,” which means “safety of the people.”
The reverse shows the date 1821 and the denomination 30 SOUS. Depicted in the center is “FR VII” for King Ferdinand VII.
References:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6113753
https://en.numista.com/catalogue/pieces26340.html
https://en.wikipedia.org/wiki/Bellver_Castle
bishquid 