Vintage Grolsch Amber Glass Swing-Top Beer Bottle

This is a vintage Grolsch-style amber glass beer bottle featuring a traditional swing-top or 'flip-top' mechanical closure. The bottle is constructed from heavy-walled, translucent amber-colored glass designed to protect contents from UV light. Its physical form is characterized by a rounded base, a bulbous body that tapers into a long neck, and a thickened collar to support the wire bale. The closure system consists of a galvanized or stainless-steel wire assembly, a ceramic or white porcelain stopper, and a red rubber gasket for airtight sealing. The exterior of the glass displays elaborate white or frosted screen-printed graphics, including ornamental scrollwork and a circular logo featuring the 'G' monogram, typical of the Dutch brewery's branding. The bottle shows significant signs of age and poor storage conditions, including heavy surface grime, mineral deposits, and dirt both inside and out. There is visible degradation to the red rubber seal, which appears hardened. The metal wire shows some oxidation and dullness consistent with an estimated age from the mid-to-late 20th century. Despite the surface debris, the glass structure appears intact without major chips visible in the photograph, though the overall condition would be classified as 'fair' due to the extensive cleaning required.