Among the Dead Sea Scrolls, 7Q5 is the designation for a small Greek papyrus fragment discovered in Qumran Cave 7. It contains about 18 legible or partially legible Greek letters and was published in 1962 as an unidentified text. The editor assigned the fragment to a date between 50 BCE and 50 CE on the basis of its handwriting.[1] In 1972, the Spanish papyrologist Jose O'Callaghan argued that the papyrus was in fact a fragment of the Gospel of Mark, chapter 6, verses 52 and 53. While most scholars have been unpersuaded by this argument, a vocal minority continue to support the identification of the fragment as a part of the Gospel of Mark.[2][3]
... Qumran ms. 7Q5 ... is captioned as if it contains a fragment of Mark: it was of course O'Callaghan who made that controversial — and now virtually universally rejected — identification of this Dead Sea text as a piece of the New Testament ...