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jꜥḥ-sign upturned

Inscriptions with the jꜥḥ-sign (N11/N12) turned upside down (so that the crescent ends point up) date from the Second Intermediate Period (16th and 17th Dynasty) and the reign of Ahmose (until year 22 of Ahmose)

SIP or early 18th Dyn.
Ilin-Tomich 2017, 8; Polz 2007a, 14-20; Vandersleyen 1971, 205-228