Earliest paparyi dating
A copyist would strictly follow a certain style of writing from an earlier time.
It may be faulty to assume that just because a writing has a similar style that it is dated later.
Is it possible that the copies of the abundance of a papyrus or scrolls dated in the 3rd century were only copying the handwriting style of an earlier document?
Retrieved May 17, 2013, from Christian Apologetics & Research Ministry: Strobel, L.
Manuscript Evidence for Superior New Testament Reliability.
Retrieved May 16, 2013, from The Gospel Coalition: Wallace, D. New Testament Scholar Daniel Wallace of the Gospel of Mark Discovery, and Other Biblical papyri with it.
Thus in P52, how do we know whether copyist of P52 is the standard and not the 3rd century writing. If the early fragment of the Gospel of John is a copy, then it can be rationally argued that there was an earlier extant of that copy.
Since the P52 fragment was found in Egypt with varying dates between 90 to 150 CE or 125 to 175 CE, it is likely then that there was an earlier copy of it.