Thank you for contacting Mearto with your appraisal inquiry. Based on the photographs and description provided, this is a pair of green glass case gin bottles likely from the early 19th century. Case gin bottles were common throughout the seventeenth through early 20th centuries. These bottles were favored by producers because their form factor lent themselves to more efficient packing into cases. On these items, the body is square in their cross sections, and appear to slightly taper from a wide shoulder to a narrower cross-section at the base. Like other examples, these pieces are the most common olive green in color. 18th century versions usually had little taper to the sides and are often essentially vertical from shoulder to heel; in the 19th century the taper seems to become more pronounced.

Unfortunately, because these types of bottles were used prominently for over three centuries, the market is flooded with case bottles for sale. Based on recent transactions and current listings by resellers of vintage bottles, Fair Market Value for these bottles is approximately $50 to $75 each.