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 ... ΠΠ 292
Long piece.
One end of rectangular stamp preserved; device; amphora(?). Rdg: below foot of vase an iota, or a flaw in the die?(VG)* Finished Pit in corner of latrine. [Θαι]σων
vaseIII
[Φιλω]ν̣ίδς | ... 5 August 1947 ... ΠΠ 333