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pieces of silver, subsequently their insertion into the iconography of the Passion, and finally, their veneration as relics. Also noteworthy is Travaini’s careful iconographic analysis of the phenomenon of the coins in images of the arma Christi, imago pietatis, the Mass of Saint Gregory, and certain heraldic depictions. The convincing analysis is also based on appropriate written sources, such as corroborated and carefully selected illustrations. No less commendable is the exploration of the specific coins as the relics, from the first written documents in which they are mentioned, to the records of pilgrims who met them in the following centuries in sacral places. Such a detailed analysis is supported at the end of the book with two appendixes: one with a list and data regarding the forty-seven sites with the relics of the thirty pieces of silver, and the other with a list of written sources on the topic, edited by Francesco di Angelo. To conclude, this is an important and intriguing book that will appeal to scholars of various topics: theology, the function of relics, iconography, numismatics, and economics. Also, Travaini’s study of the thirty pieces of silver opens issues which are sure to interest researchers who are directly involved with the influence of money on the economy of salvation. These are primarily topics linked with testamentary pro anima legacies, as well as other types of endowments.