ITALY. Papal Coinage. Benedict XV, 1914-1922. Medal 1922 (Silver, 44 mm, 35.84 g, 12 h), on the encyclical Principi Apostolorum Petro, whereby Saint Ephrem the Syrian, an Orthodox Doctor of the Church, was recognized as a Doctor of the Catholic Church. BENEDICTVS XV - PONT MAX A VII Bust of Benedict XV to left. Rev. DOCTORVM SCRIPTVRAE DVX CELEBRATVS // NVMERVS AVCTVS / ANNO MCMXX St. Jerome and St. Ephrem sitting around an altar with the Bible radiated by the Dove of the Holy Spirit. Rinaldi 115. Virtually as struck.