A: Osiris as a mummy, standing to front in a papyrus boat, wearing the atef-crown complete with ram's horns and uraei. He is flanked by two winged goddesses with double feathers crown (?), raising their arms in a gesture of protection, and wearing long garments. Two falcons crowned with the double crown of Egypt perch on the stem and stern of the boat.
B: αεηιουω → The Greek vowel series arranged between pseudo-hieroglyphs.
Bibliography
Bonner, SMA on CBd-1258
The Kelsey Museum Artifacts Database on CBd-1258