| Date | X century |
| Original kept | Chapterhouse Archive at the Royal Collegiate of San Isidoro de León, number 2 |
| Format | 485 x 345 mm |
| Pages | 1.030 pages |
| Illumination | Richly decorated with biblic stories, big capital letters, etc |
| Binding | Bound in leather with edges and a silver lock |
| Language | Latin |
| Publisher | Hullera Vasco-Leonesa foundation |
