It is from the bottom.
The underside thickened and rounded near the center (?). On the upper face, raised ridges forming diminishing rectangles.
Colorless glass. Roman House B, in impluvium. Leica ... 5 August 1947
Above half of the base preserved.
The center of the bottom remains, with part of a broad cylindrical base finished with a plain rolled resting edge, projecting.
Colorless glass. Building P, room 2, above ... 7 August 1947