The manuscript is a codex (precursor to the modern book format) containing the text of Psalm 1:4-151:6 and Odes 1:1-6 (from the Greek Septuagint translation of the Hebrew Bible), made of 107, badly decayed and worm eaten, parchment leaves (a total of 214 pages).

[1]: 37  In his initial description of the manuscript, biblical scholar Henry A. Sanders noted that sometime in the 10th Century CE, some of the final pages of the codex that contained Psalms 142:9-151 were lost.

[2]: 114  It has certain ligatures that represent the letters και (kai), ου (ou), μου (mou), αυτου (autou), ον (on), μαι (mai), του (tou), μνης (mnes), νην (nen), θαι (thai), and ται (tai), for the ends of lines where the text becomes crowded, although sometimes these ligatures are used within the lines themselves.

The manuscript consistently uses the following nomen sacrum: ΘΣ (θεος / God), ΚΣ (κυριος / Lord), ΔΑΔ (Δαυιδ / David), and ΧΣ (χριστος / Messiah/Anointed); with other nomina sacra used frequently: ΟΡΟΣ (ουρανος / heaven), ΙΗΛ (Ισραηλ / Israel), ΜΗΡ (μητηρ / mother), ΣΗΡ (σωτηρ / saviour), ΠΡΣ (πατρος / father), ΑΝΟΣ (ανθρωπος / man/human), ΠΝΑ (πνευμα / Spirit), ΥΣ (υιος / son), and ΙΗΛΜ (Ιεροσαλημ / Jerusalem).

It employs the use of numerous nomina sacra (although with slight divergence from those seen in Λ), consistently using the nomen sacrum for ΘΣ (θεος / God), ΚΣ (κυριος / Lord), ΔΑΔ (Δαυιδ / David); with other nomina sacra used frequently: ΟΥΝΟΣ (ουρανος / heaven), ΙΣΛ (Ισραηλ / Israel), ΠΡΣ (πατρος / father), ΑΝΟΣ (ανθρωπος / man/human), ΠΝΑ (πνευμα / Spirit), and ΙΗΛΜ (Ιεροσαλημ / Jerusalem).

In contrast to Λ, υιος (huios / son) is not a nomen sacrum, and μητηρ (meter / mother) doesn't occur.

[2]: 123–124 Prior to its purchase by industrialist Charles Lang Freer in 1906 from an Arab dealer named Ali from Gizah, Cairo, very little is known about the manuscript, where it came from or for whom it was written.

[1]: 45 When the manuscript was granted to Sanders, he had to go through a long and precarious process of separating the leaves of the codex, which due to decay had turned the parchment into a hard, glue-like substance, becoming a solid mass.

[3] Further photographs of the pages were made in 1919, where one copy was sent to the British Museum in London, England, and one was placed in the Freer Gallery in Washington D.C., in the USA.