A: Horus-Harpocrates sitting to right on lotus with one leg bent in knee, holding flail in his right hand. His left hand raised to his mouth. On his head a solar disc with three rays. Two buds on the lotus flower. Baseline to indicate primeval mound?
B: Inscribed in four lines: αβλαν|αθαναλ|βασεσεν|γενβαρ → Ἀβλαναθαναλβα-palindrome, part of σεσεγγενβαρφαραγγης.
A praxis known from a papyrus (PGM LXI 1-38) specifies that love charms had to be incised with the image of Horus on a lotus flower and the magical name Abraxas. Pieces with the Horus-scheme used as love charms: CBd-533, CBd-534.
Bibliography
Michel, BM on CBd-506
The British Museum Collection database on CBd-506