How do I date a wine glass?

Dating relies on combining the form of the bowl, the construction of the stem, and the shape of the foot. Eighteenth-century pieces frequently employ baluster or twist stems, while later nineteenth-century examples often present as heavier rummers. Changes in glass chemistry, such as the introduction of lead crystal, and stylistic shifts from Queen Anne to Victorian aesthetics also guide dating.

What is an air twist stem?

An air twist is a decorative stem containing elongated bubbles drawn into a spiral thread inside the clear metal. Makers achieved this by piercing hot glass with a pin before stretching and twisting the mass. This technique creates internal channels that refract light without adding external texture to the stem surface.

Why are some feet folded?

Makers folded the rim of the foot underneath during the blowing process to add physical weight and reinforce the weakest edge of the vessel. This practice was common on earlier eighteenth-century drinking glasses. It provides tactile evidence of early manufacturing techniques designed to prevent chipping during daily tavern or household use.

What are lemon squeezer bases?

Lemon squeezer bases are square, moulded feet with steeply sloping sides that mimic the profile of a kitchen juicer. They appeared predominantly around eighteen hundred on heavy rummers and related glassware. This moulded form gave stability to taller drinking vessels used in domestic settings.