The latest issue of Novum Testamentum has an article that I wrote on the production and date of P.Bodmer 14-15 (a.k.a. P75, a.k.a. Pap.Hanna 1, Mater verbi, TM 61743), a papyrus codex containing the Gospel According to Luke and the Gospel According to John:
“The Construction and Date of P.Bodmer 14–15 (P75): The Length of kollemata as a Criterion for Dating Papyrus Codices,” Novum Testamentum 68 (2026) 518–538.
It’s open access.
This is not the first time I have addressed the question of the date of this codex. In 2016, I published an article in the Journal of Biblical Literature, which argued that the standard dating of the papyrus (“ca. 200 CE”) was based on surprisingly weak palaeographic evidence and that a more realistic approach that combined palaeography, codicology, and alleged archaeological provenance would allow for a date of production in the fourth century.
In the new article, I’ve tried to come at the problem from a different angle. In a blog post from 2025, I briefly mentioned a change that took place in the manufacture of papyrus rolls in the fourth century. In the early imperial period, the kollemata (papyrus sheets) that were pasted together to form papyrus rolls usually had a breadth that did not exceed about 30 cm. In the fourth century, however, we begin to find papyrus rolls that were made up of much longer kollemata, up to and beyond a meter in breadth.

Because the bifolia of papyrus codices were cut from papyrus rolls, this datum is a neglected tool for helping to assign dates to papyrus codices.
Here is the abstract for the new article:
This article describes an underutilized criterion for assigning dates to papyrus codices, the presence of very long sheets (kollemata) in the rolls from which the bifolia of papyrus codices were cut. In the 1970s, Eric Turner argued that a shift in the production of papyrus rolls took place in the fourth century, at which point rolls began to be manufactured using kollemata much longer than the 10–30 cm kollemata normally used in the early Roman imperial period. The present article briefly discusses the manufacture of papyrus rolls, gathers evidence for longer kollemata, and places this evidence in conversation with P.Bodmer 14–15 (P75). The date of this manuscript has been the subject of some debate in recent years, and consideration of the length of its kollemata adds another, perhaps decisive, piece of evidence that this codex was produced no earlier than the fourth century.
This was a fun article to research and write. It assembles a corpus of codices whose bifolia are cut from papyrus rolls with very long kollemata (greater than about 80 cm):
- Berlin Gnostic Codex (P.Berol. inv. 8502, TM 107765), usually assigned to the 5th century
- Nag Hammadi Codices I, II, III, VI, VII, VIII, IX, X, XI, XIII, after the middle of the 4th century
- British Library Ms. Or. 7594 (TM 107763, “Budge’s Deuteronomy”), after the middle of the 4th century
- PGM IV (Paris, BnF Suppl. grec 574, TM 64343), usually assigned to the 4th century
- Bodmer Codex of Visions (TM 59994), after the middle of the 4th century (usually assigned to the 5th century)
- Bodmer Menander Codex (TM 61594), now usually assigned to the 4th century
- P.Bodmer 3 (TM 107758), usually assigned to the 4th century
- Crosby-Schøyen Codex (TM 107771), now usually assigned to the 3rd or 4th century
- Chester Beatty Ac. 1499 (now CBL BP XXI, TM 61873), usually assigned to the 5th century
- Ambrosian Josephus (TM 61316), assigned to the 6th century
The examples that can be relatively securely dated (Budge’s Deuteronomy, at least three of the Nag Hammadi codices, and the Bodmer Codex of Visions) were produced no earlier than the middle of the fourth century. Radiocarbon analysis of the Crosby-Schøyen Codex allows for a date of production from the middle of the third century to the middle of the fourth century; indications of the contents of the last tractate suggest the second quarter of the fourth century may be the most likely date of production.1 The other codices are all usually assigned to the 4th or 5th century (or the 6th century in the case of the Ambrosian Josephus).
Papyrus rolls with shorter kollemata continued to be produced during and after the fourth century, but the production of rolls with very long kollemata seems to be an innovation of the fourth century. The upshot, as I phrase it in the article: “We may formulate a tentative rule of thumb: Papyrus codices with bifolia cut from rolls made up of shorter kollemata are not necessarily older than the fourth century, but papyrus codices with bifolia cut from rolls made up of long kollemata are more likely to have been made in the fourth century or later.”
As it turns out, the two kollemata of P.Bodmer 14–15 that can be confidently reconstructed are also quite long (at least 1.28 m and 1.34 m).
That the bifolia of P.Bodmer 14–15 were cut from papyrus rolls with such long kollemtata is an important piece of evidence for establishing the date when the codex was made. As I phrase it at the end of the article:
“On its own merits, this argument would be reason enough to establish the fourth century as a terminus post quem for the production of P.Bodmer 14–15. Yet, in the specific case of this codex, the long kollemata add to an already substantial amount of evidence pointing to a date of production in the fourth century:
– the palaeographic similarity of the script of P.Bodmer 14–15 to the script of documents securely dated to the fourth century;
– the similarity of the format of P.Bodmer 14–15 to that of codices securely dated to the fourth century;
– the likely association of P.Bodmer 14–15 with the Bodmer Papyri, which consist mostly of codices of the fourth and fifth centuries.
New discoveries and perhaps further study of known papyrus codices may reveal that the use of rolls with very long kollemata developed earlier than the fourth century. Pending such studies, however, the presence of very long kollemata should probably be taken as a reasonably strong indication of manufacture in the fourth century or later. The production of P.Bodmer 14–15 should now be assigned with some measure of confidence to the fourth century.”
- See the detailed discussion in Hugo Lundhaug, “The Date of MS 193 in the Schøyen Collection: New Radiocarbon Evidence,” BASP 57 (2020) 219–234 ↩︎

























