There is no OI inside the diamond shape. There are small numbers inside the diamond that are very faint. The 1 is not inside that diamond shape but all the way to the right hand bottom side of the bottom.
No...it looks like there is a ?97 or possibly ?92 very small in the middle of the diamond shape. It is so faint, it's really hard to see. The 1 is all the way on the right side of the bottom of the bottle. The 1 is not in or touching the oval or the diamond shapes at all.
This bottle was found inside of a wall of a building. On the bottom, it has an oval with a diamond shape overlapping it. There is also a 1 on the right hand side of this mark.
Just wondering the age of the bottle.