A: Chnoubis-snake with unspecified head, surrounded by seven rays.
B: χνουφισ → Χνουφίς. Below: Chnoubis-sign.
Bibliography
Michel, BM on CBd-91
Michel, DMG, 11.10_2
The British Museum Collection database on CBd-91
Images
See the photography by G. Kornbluth
(In: 'Abrasax gems' of Kornbluth Photography)