P.Ryl.iii.457, a papyrus fragment of the gospel of John known to New Testament scholars as P52, is regularly publicised as the earliest extant Christian manuscript and forms a central part of the Rylands collection. Yet the date generally assigned to the fragment (‘about 125 ad’) is based entirely on palaeography, or analysis of handwriting, which cannot provide such a precise date. The present article introduces new details about the acquisition of P52, engages the most recent scholarship on the date of the fragment and argues that the range of possible palaeographic dates for P52 extends into the third century.