[Plutarch]

Looks more like a Grecian Doric column.

Exactly. Romans used columns, but the photo doesn't distinguish between Greek and Roman columns. Now if an arch were used, that would be Roman.

[Drammach]

Romans used columns, but the photo doesn't distinguish between Greek and Roman columns.

The photo shows a base for the column.. (Tuscan / Roman Doric )
The column is fluted, while classically, the tuscan would be plain, but roman doric used either..
The capital is plain, and follows the roman doric or tuscan example..

The deciding factor for me is the base more than anything..
It establishes the column is not greek, as they did not use a base for their columns.

I would suggest, therefore, the column is probably Roman Doric, after the advent of the Tuscan style..
Not exactly sure what the timeline would be on that..
But anything after say, 250 - 200 BC would be reasonable.