The Roman Septuagint, also known as the Sixtine Septuagint (Sixtine LXX) or the Roman Sixtine Septuagint, is an edition of the Septuagint published in 1587, and commissioned by Pope Sixtus V.
The printing of the book "was worked off in 1586, but the work was not published until May 1587". Hence why a second I on the publication date of the book "has been added in many copies with the pen".
This edition is based on the Codex Vaticanus. The text of this edition of the Septuagint became mostly the standard for all the later editions of the Septuagint for three centuries after its publication, until Rahlfs published his edition of the Septuagint which became the new standard.
↑Quentin, Henri (1922). "Chapitre sixième - Les commissions pontificales du concilde de Trente à Sixte-Quint" [Chapter Six - The Pontifical Committees from the Council of Trent to Sixtus Quintus]. Mémoire sur l'établissement du texte de la Vulgate (in French). Kelly - University of Toronto. Rome: Desclée. p.170.
↑Hunwick, Andrew W. R. (2013-03-14). "Chapter twenty: Objections Raised to the Books of the New Testament". Richard Simon Critical History of the Text of the New Testament: wherein is Established the Truth of the Acts on which the Christian Religion is Based. BRILL. p.202. ISBN978-90-04-24421-4. Vetus Testamentum juxta Septuaginta ex auctoritate Sixti V. pont. max. editum (Rome: Zannetti, 1586 [BnF A-52]), the "Roman" or "Sixtine" Septuagint, under the direction of cardinal Antonio Carafa (1538-1591).