Round glass-fronted silvered brass reliquary theca housing substantial first-class ex praecordis (of the inner organs) pre-canonization relic of Saint Leonard of Port Maurice. The relic is centered on a red silk background and identified on a typographic cedula label as Ex Praecord. / B. Leonar. C. (of the inner organs of the Blessed Leonard, Confessor). On the back, under a protective cap, the theca is secured by a perfectly preserved seal of red Spanish wax with a clear imprint of a coat of arms of an unidentified Roman Catholic bishop.
Saint Leonard of Port Maurice, O.F.M., (Italian: San Leonardo da Porto Maurizio) († 1751) was an Italian Franciscan preacher and ascetic writer called "the great missionary of the 18th century". Pope Pius VI pronounced his beatification on 19 June 1796, and Pope Pius IX his canonization on 29 June 1867. St. Leonard's Church in Boston, founded in 1873, is the first Roman Catholic Church in New England built by Italian immigrants. His Feast is celebrated on November 27.