This is a small vintage cobalt blue glass bottle, notable for its deep blue color and embossed triangular symbol on the base. The bottle measures approximately 2 inches tall and weighs 1.5 ounces, making it a collectible miniature container likely used for medicinal or decorative purposes.

• Made of thick cobalt blue glass with a rich, vibrant hue
• Features two raised rings around the neck for sealing or decorative effect
• Embossed triangular mark on the bottom, possibly a maker's symbol or mold identifier
• Measures about 2 inches in height as shown by ruler in photos
• Weighs 1.5 ounces on a precision scale
• Condition is good with no visible chips or cracks, minor surface wear consistent with age

This bottle was likely designed for holding small quantities of liquid such as medicine, perfume, or ink. Today it serves as a charming collectible or decorative piece for vintage glass enthusiasts or collectors of small bottles.