Domitian Æ Obol of Alexandria, Egypt. Dated RY 11 = AD 91/2. ΑΥΤ ΚΑΙϹΑΡ ΔΟΜΙΤ ϹЄΒ ΓЄΡΜ, laureate head to left / Sphinx to right; LIA (date) below. RPC II 2646; Dattari (Savio) 571; Emmett 326. 18 mm, 5,21 gm. Good fine. Only coin of this type with date below the Sphinx!
In Domitian's 11th regnal year at Alexandria the city's mint struck a most fascinating obol featuring the Great Sphinx of Giza on the reverse. The monolith of a mythical beast with a pharaoh's head and lion's body was carved out of solid limestone during the reign of pharaoh Khafre (c. 2558–2532 BC) and sits on the west bank of the Nile in front of the Great Pyramid. During the Roman era the monument was a source of wonderment and awe. This rare obol was struck in the early 90's soon after the Alexandrian mint was overhauled and new types were introduced. Traditional Sphinxes from Greek myth with a winged lion's body and woman's head had been depicted on coins before, but this is the first instance of the Great Sphinx being shown on any coin. The reclining position, lack of wings, and pharaoh's head leave no doubt that the Giza monolith is indeed what we see on the reverse. The Sphinx obol along with the Pharos hemidrachm serve as a sort of first century travelogue for the ancient traveller of what to see when visting Roman Egypt. (Cited from: https://www.cointalk.com/threads/the-riddle-of-the-sphinx.375591/)