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Private issues

Zacatecas ProanoProaño

The Proaño mine, located just outside the city of Fresnillo, is one of the world’s largest and most profitable silver mines.

In April 1880 it was reported that, in order not to interrupt work, the mine was making its payroll with money, goods and bearer notes (vales al portador)[image needed] redeemable in the clothing store, grocery and tobacconist’s, all owned by the directors, at cash pricesLa Patria, Mexico City, 20 April 1880.