A ancient greek sculpture is an item in Evony TKR (The King's Return).
Ancient Greek Sculpture is one of the collection items in the exhibition for the Art Hall. It is one of four parts in the Body Sculpture Hall. After the set is completed at three stars, you can trade additional Ancient Greek Sculpture fragments for gold.
The description of Ancient Greek Sculpture in Evony TKR says:
Various human body sculptures. The important exhibits in Body Sculpture Hall.
Ancient Greek Sculpture is known to potentially be obtainable from opening Artwork Fragment Chest I, Artwork Fragment Chest II and Artwork Fragment Chest III. The links for each item are below:
Note: This list may be incomplete.