The reverse depicts the temple of Hermanubis, the location of which is still unknown, possibly part of the serapeum at Canopus.
In the RPC online with a temporary number where only 6 pieces are known.
Roman Provincial
Egypt, Alexandria, Antoninus Pius (138-161), Drachm 141-142, Alexandria mint
Obverse: laureate, draped and cuirassed bust right.
AVΤ Κ Τ ΑΙΛ ΑΔΡ ΑΝΤⲰΝΙΝΟϹ ϹƐΒ ƐVϹ
Reverse: temple with two columns enclosing statue of Hermanubis holding caduceus and palm-branch, at his feet jackal, L-Є across fields (Dated Year 5)
Diameter 33 mm, weight 23.55 g