C-14 Dates for Qur'ans
"The famous “Qurʾan of the Nurse” is one of the best-documented manuscripts at hand. Its colophon and its deed of waqf allow us to know that the copy was completed in 410/1020. An analysis performed on a piece of parchment taken from the manuscript helped to evaluate the accuracy of the measurements. A French laboratory determined the radio carbon age of the parchment as BP 1130±30. This result was then calibrated and gave a date range comprised between 871 and 986 AD, with a probability of 95%. The most probable dates, arranged in decreasing order of probability were 937, 895 and 785 AD. The closest result, that is to say 937 AD, is separated by eighty-three years from the date provided by the colophon. If we use the upper limit of the date range,that is to say 986 AD, the difference still amounts to fifty-four years, that is to say half a century."