Codex Zacynthius (designated by siglum Ξ or 040 in the Gregory-Aland numbering; A1 in von Soden) is a Greek New Testament codex, dated paleographically to the 6th century. First thought to have been written in the 8th century, it is a palimpsest—the original (lower) text was washed off its vellum pages and overwritten in the 12th or 13th century. The upper text of the palimpsest contains weekday Gospel lessons (ℓ299); the lower text contains portions of the Gospel of Luke, deciphered by biblical scholar and palaeographer Tregelles in 1861. The lower text is of most interest to scholars.

Minuscule 33, δ 48 (Soden), before the French Revolution was called Codex Colbertinus 2844. It is a Greek minuscule manuscript of the New Testament on parchment, dated palaeographically to the 9th century. The manuscript is lacunose. It has marginalia. According to the textual critics it is one of the best minuscule manuscripts of the New Testament.