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: double cornucopia adorned with ribbons, pomegranate between horns
Die Orientation: -
Weight: 2.1 g

Reverse: Seleucid anchor; BAΣIΛEΩΣ AΛEΞANΔPOY
Die Orientation: -
Weight: 0.67 g

Reverse: Anchor in circle, BAΣIΛEΩΣ AΛEΞANΔPOY
Die Orientation: -
Weight: 0.71 g

Reverse: Anchor in circle; BAΣIΛEΩΣ AΛEΞANΔPOY
Die Orientation: -
Weight: 0.6 g

Reverse: Anchor within circle blundered barbaric imitation of Greek legend around
Die Orientation: -
Weight: 0.54 g

Reverse: double cornucopia adorned with ribbons, pomegranate between horns
Die Orientation: -
Weight: 1.4 g

Reverse: double cornucopia adorned with ribbons, pomegranate between horns
Die Orientation: -
Weight: 2.3 g