ref.: EEF post d.d. Nov 17, 2009, Steve Harvey, "re: Images of Osiris/Ptah with falcon counterpoise?"
copyright 2009, Stephen Harvey, Ahmose and Tetisheri Project, Abydos
source: A. Gardiner, A. Calverly and M. Broome, The Temple of King Sethos I at Abydos, 4 volumes. (London and Chicago: 1933-1958).