Science explains its origin – La Nación

by times news cr

2024-09-07 11:13:33

In the international coin collecting community, a discipline known as numismaticsThere is a famous old Peruvian currency that circulated in the national economic circuit when, in theory, it should not have done so.

This is a 10 cent coin or cents minted – that is, manufactured – in 1899which, due to the alloy of metals used, the method of production and other subtle characteristics, does not correspond to an official currency. They know this because, according to the Lima Mintno such coins were minted that year.

Recently, a team of experts from the Pontifical Catholic University of Peru (PUCP) examined the characteristics of this coin, compared it with 80 others that circulated in parallel at that time and, finally, revealed its possible origin, which has been a mystery since approximately 1978, when it gained popularity among collectors.

The study describing their findings was published in the journal Heritage Science in November 2023.

The 1989 Peruvian ten cent coin on both sides. Photo: Heritage Science (2023)

The mystery of the 1899 coin

According to experts, Luis Ortega San Martin (chemist) and Fabiola Bravo Hualpa (physics), between the period of 1863 and 1917, the theoretical date on which this currency would have been minted, one sol coins were 25 gram pieces composed mainly of plata (90%) and the remainder of copperAn example of what they looked like can be seen in the following video.

“Lower denominations minted in silver included half a sol (50 centavos), a fifth of a sol (20 centavos, ‘quintos’), a tenth of a sol (10 cents, ‘dinero’) and a twentieth of a sol (5 cents, ‘medio dinero’). The highest denominations were minted in gold and the lowest in copper-based alloys,” the article details.

Now, with respect to the 1899 coin (‘one penny’), it has been discovered, after an exhaustive analysis, that this piece has a slightly lower weight and contains copper, nickel, zinc, hierro y leadelements that would suggest that it was produced many years before its minting date.

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