The product is a 5 Centavos coin from Mexico, specifically from the Second Republic period (1867-1905). It is composed of copper nickel with a fineness of 75% nickel and 25% copper. The coin was minted in 1882 and has a diameter of 20mm and a weight of 5 grams. The coin carries the KM# 399 catalog number, showcasing its historical value and authenticity.