There are two possible explanations for this:
If the former, patience is key - this site covers thousands of entities, and all must have a manually created description written.
If the latter, try renaming the property - 'Domitian as Caesar' has no description, but 'Domitian' does.
Reverse: Poseidon
Die Orientation: -
Weight: -
Reverse: ΒΑΣΙΛΕΩΣ ΘΕΟΥ ΑΝΤΙΜΑΧΟΥ (Poseidon stg. facing, holding trident and palm branch; in lower r. field, monogram.)
Die Orientation: -
Weight: 16.98 g
Reverse: owl standing right, grape bunch over tail; olive sprig and crescent above; AΘE
Die Orientation: -
Weight: 17 g
Reverse: eagle standing left, head right, grape cluster on vine with leaf above
Die Orientation: -
Weight: 3.2 g
Reverse: owl standing right, grape bunch over tail; prow above AΘE
Die Orientation: -
Weight: 8.2 g
Reverse: owl standing right, olive sprig and crescent above; all within incuse square; AΘE
Die Orientation: -
Weight: 17 g
Reverse: Diademed bust of king right Rev.: ΒΑΣΙΛΕΩΣ ΕΥΚΡΑΤΙΔΟΥ (Two pilei surmounted by stars and two palm branches), monogram in field
Die Orientation: -
Weight: 0.64 g