Vintage Pyrex Glass Baby Bottle

*Comes with an extra rubber cap that is currently taped to the side of the bottle. This is a vintage Pyrex glass baby bottle, likely from the mid-20th century. It is made of low-thermal-expansion borosilicate glass. The bottle has a distinctive hexagonal shape. "PYREX" is embossed vertically and horizontally on different sides of the bottle. It typically has an 8-ounce capacity, with graduated measurements embossed on one side. The bottle in the image appears to have its original rubber nipple and sealing cap.