A: Ouroboros enclosing Horus-Harpocrates seated to left on lotus with one leg bent in knee. His right hand raised to his mouth, his left holds a flail. Baseline indicating primeval mound? On the flower, two buds.
B: Inscribed in five lines: αοχωι|φριξαηωια|ηουλχρχαρ|σλαβλαναθ|αναλβα → voces including vocales, χαρ, Ἀβλαναθαναλβα-palindrome.
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-505
The British Museum Collection database on CBd-505