A very controversial issue is the date of the early papyri of the NT. On his blog, Larry Hurtado summarizes a very important recent article on the subject of "theological palaeography":
Pasquale Orsini & Willy Clarysse, “Early New Testament Manuscripts and Their Dates: A Critique of Theological Palaeography,” Ephemerides Theologicae Lovanienses 88 (2012): 443-74.
Pasquale Orsini & Willy Clarysse, “Early New Testament Manuscripts and Their Dates: A Critique of Theological Palaeography,” Ephemerides Theologicae Lovanienses 88 (2012): 443-74.
Abstract :The date of the earliest New Testament papyri is nearly always based on palaeographical criteria. A consensus among papyrologists, palaeographers and New Testament scholars is presented in the edition of Nestle-Aland, 1994. In the last twenty years several New Testament scholars (Thiede, Comfort-Barrett, 1999, 2001 and Jaroš, 2006) have argued for an earlier date of most of these texts. The present article analyzes the date of the earliest New Testament papyri on the basis of comparative palaeography and a clear distinction between different types of literary scripts. There are no first-century New Testament papyri and only very few papyri can be attributed to the (second half of the) second century. It is only in the third and fourth centuries that New Testament manuscripts become more common, but here too the dates proposed by Comfort-Barrett, 1999, 2001, and Jaroš, 2006 are often too early.I have compiled a small table demonstrating that the critique for a general tendency to date early in "theological palaeography" is not applicable to the Nestle-Aland edition. In spite of some significant differences, we see that seven papyri or uncials are still dated potentially to the second century. However, now three papyri in the second-century range in NA, are dated to the third century by Orsini and Claryssee (P77, P98 and P103). Conversely, the latter assign one papyrus and two uncials in the second-century range (P4+64+67, 0171, and 0212) which NA has dated later. Perhaps the most significant difference here is 0171 which Orsini and Claryssee think is 125 years earlier!
GA no. | P30 | P52 | P4+64+67 | P77 | P90 | P98 | P103 | P104 | 0171 | 0189 | 0212 |
Nestle-Aland date | 200-300 | 100-150 | 200-250 | 150-250 | 100-200 | 100-200 (?) | 150-250 | 100-200 | 300-350 | 150-250 | 200-300 |
Orsini-Claryssee date | 175-225 | 125-175 | 175-200 | 250-300 | 150-200 | 200-250 | 200-300 | 100-200 | 175-225 | 300-400 | 175-225 |