This bottle was in my grandmother's antiques. I have researched to find the date it was made and for what it was used. There are many websites that state screw top bottles were made after 1920 and that by 1920 "bottles were refined in that bubbles were eliminated and the thickness of the glass made more uniform." This bottle does have a screw top, but it does not screw on evenly, plus the glass is thick and uneven just inside the mouth along the sides (please see photo), in fact the whole bottle is uneven or crooked. There are lots of rather large included bubbles, especially in the thick glass that is uneven. The sealing surface is rough, flat and thick - like it was filed down. There are no maker's markings, no patent numbers, no registration numbers, or anything embossed in it. The bottle is 6 1/8 inches tall, 4 3/4 inches wide, and 1 3/4 inches deep. It is 2 inches in diameter at the mouth. It has 3 comma shapes in a circle impressed into the glass on the front. If anyone recognizes the brand logo and knows for what the bottle was used (i.e., syrup), and, most importantly, the date the bottle was made, I would greatly appreciate it.