The following paragraph is from Dr. Asher Eder’s book The Star of David, which was published in 1987 in English in Jerusalem by Rubin Mass Ltd. The publication here is courtesy of Oren Mass
This version includes corrections and new materials that do not appear on the printed version
showing the six-pointed star together with other typical Jewish symbols is a school writing exercise from the 10th Century B.C.E. found in the Genizah of Cairo. It shows, besides an exercise in the Hebrew alphabet, a Menorah (seven-branched candelabrum) with two six-pointed stars next to its shaft
It is unlikely that the pupil who made this drawing was guided by his own inspiration when he linked the stars to the Menorah. We may conclude that he gave expression to an attitude prevalent in his community, which saw the star on a par with the Menorah. Yet, even from such an attitude, we cannot conclude that the star was then a specific Jewish emblem, for it was also widely used by Muslims.