Collection of 103 hard Sevillian coins. In silver 9900. Description of the collection by tray: 32 coins of Alfonso XII, 39 coins of Alfonso XIII "Pelón", 17 coins of Alfonso XIII "Bucles", and 15 coins of Alfonso XIII "Flequillo". Enclosed is a book: "La Guía de los duros sevillanos" by José Francisco Martínez Roca. There are several theories about calling the fake duros with the name "Sevillanos". On the one hand, there was the general thought that these coins were manufactured by the aristocracy of Seville, with some consent of the government, although on the other hand, it could come simply because it was in this city where (it is supposed) they first appeared. It must be clear, first of all, that "sevillanos" is the generic name for the false duros minted only in silver, not having this denomination the rest of the abundant false duros made with vile metals of lesser value. The silver used for the "duros sevillanos" had a good purity grade to be as similar as possible to the authentic ones, normally 900 thousandths and with an identical coin weight, even many times higher than the 25 grams of the real ones. Enclosed is a book: "La Guía de los duros sevillanos" by José Francisco Martínez Roca.