6.- Shape.- In addition to the round coin, there are other polygons (square, rectangular, pentagonal, octagonal, etc.); for example, the 10-peso heptagonal coin minted in Mexico between 1974 and ...

From 5, 10 or up to 1 peso, a wide variety of coins are sold on an internet platform at exorbitant prices, such is the case of a low-denomination copy that is offered at a high price, due to an ...