That's definitely soda-lime. (Judging both by the pattern and the logo.) The reason for that pattern according to the source I linked above is that that is th

That's definitely soda-lime. (Judging both by the pattern and the logo.) The reason for that pattern according to the source I linked above is that that is the shape of the air jets used for cooling the glass during tempering. Windshield glass shows the same patterns for the same reasons.