Perhaps built in sequence with O.Ret. wall 7375. Certainly later than tufo block 7324. The extent to which this wall is preserved is impossible to determine without more excavation, and any conclusions are difficult to make with any confidence. Almost surely later than ashlar phase exhibited on east wall of H15 due to differing building techniques. Depending on how far down 7393 proves to be preserved, it should end up being earlier or maybe contemporaneous with 7374 in the middle of the room. Perhaps one of the earlier stages, with 7375, of this space's segmentation info smaller and smaller rooms.