This tufo ashlar portion of the North-South party wall for rooms H-10 and H-12 appears to be a continuation of the North-South party wall for rooms H-9 and H-11 by being in line with 7353, 7354, 7355, 7356 and 7357, creating the western limit for room H-10 and the eastern limit for room H-12, in line with the eastern limit for room H-11 and the western limit for room H-9. This tufo ashlar portion is likely a threshold for a previous doorway between rooms H-10 and H-12, which was later plugged by 7359.