This manuscript was produced in Scotland in the late 13th century, probably sometime between 1285 and 1300 according to Hair and Knott. Borland, Frere and McRoberts have suggested that it may be of the early 14th century, but most scholars agree that it was written sometime around 1300.

The manuscript contains musical services as well as the text of Church services according to the Use of Sarum. The work is written in littera textualis in double columns of unequal length.

The contents are as follows:

At the start of the volume there is an unfoliated stub which has remnants of notation and text.

Temporale. Lacking the first quire and excluding the Corpus Christi. Also contains the rhymed Office for St. Kentigern on folios 35v-38v. Folios 1r-155v.

Calendar of Saints. Excludes St. Kentigern, but contains three later additions of Scottish saints: Baldred (6 March), Duthac (his translation, 26 June) and Blane (12 August). Folios 156r-158v.

Psalter. Folios 159r-192v.

Litany. There is a double invocation of St. Kentigern on folio 193r. Folios 192v-193v.

Sanctorale. Folios 194r-319v.

Commune Sanctorum, incomplete. Folios 320r-337v.

Borland notes that leaves are often misplaced, with leaves belonging to the 'Sanctorale' found in the 'Commune sanctorum'.

The breviary is decorated with coloured pen and brushwork filigree scrolls in blue and orange vermillion. There are some large litterae florissae and litterae notabiliores throughout, coloured blue and vermillion with branchwork extending into the margins. Vermillion is used for stave lines as well as for passages of text. In some cases the vermillion text has been erased or obscured. In the psalter and the litany the initials of passages and entries are coloured red and blue alternately.

There are marginal drawings of a horse and a man on folio 277v, possibily in a Scottish hand of the 14th century.

Many of the folios are soiled and damaged from use and from damp.

Extensive repairs to the vellum, both contemporary and modern, are evident throughout.

Occasionally folios have been cut causing a loss of text, and in some cases text has also been obscured due to the binding.

Each folio recto and verso has been lined and ruled.