1990 Documented reliquary theca with relics of St. Pope Pius I, St. Pope Clement I & Vietnamese St. Dominic Nicholas Dat

Round glass-fronted yellow-metal reliquary theca housing the first-class ex ossibus (of the bone) relics of three Christian Saints: Saint Pope Pius I, Saint Pope Clement I, and a Vietnamese Martyr Saint Dominic Nicholas Dat. The relics are affixed to a red silk ground and identified in Latin on a typeset cedulae labels. On the back, under the protective cap, the theca is secured with a seal of red Spanish wax bearing an imprint of a coat of arms of The Order of Preachers, (commonly known as the Dominican Order), The relic is accompanied by the original matching authentics document issued in 1990 by the Postulator General of the Order responsible for the cause of beatification and canonization. 

Saint Pope Pius I († c. 154) was the bishop of Rome from c. 140 to his death. He is considered to have opposed both the Valentinians and Gnostics during his papacy. He is celebrated as a Martyr saint by the Catholic Church with a feast day on 11 July.

Saint Pope Clement of Rome (†99), also known as Pope Clement I, was Bishop of Rome (p. 88-99) have been consecrated by Saint Peter, is considered to be the first Apostolic Father of the Church and a leading member of the church in Rome in the late 1st century. He was imprisoned under Emperor Trajan; during this time he is recorded to have led a ministry among fellow prisoners. He was executed by being tied to an anchor and thrown into the sea. Clement is recognized as a saint in many Christian churches and is considered a patron saint of mariners and stone-cutters. He is commemorated on 23 November in the Catholic Church and 24 November in Orthodox Christianity.

Saint Dominic Nicholas Dat (Đaminh Đinh Văn Đạt) (†1839) was a Vietnamese Catholic layman, soldier, and martyr. Born in Phú Nhai, Nam Định province, he served in the military. During Emperor Minh Mạng’s persecution, he and fellow soldiers were pressured to trample a cross; under threats to their families he briefly yielded, but immediately repented, returned any reward, reaffirmed his faith, and requested to be judged again as a Christian. He was strangled on July 18, 1839. Possibly a Dominican tertiary, he was beatified in 1900, by Pope Leo XIII and canonized on June 19, 1988, by Pope John Paul II among the 117 Vietnamese Martyrs. His feast day is July 18 (or November 24 with the group).