Physical Description

One dark green glass beer or wine bottle base. Has a maker's mark: 'R. COOPER & CO PORTOBELLO'. This firm was in production between 1866 and 1928. Was manufactured in a vented mould with a separate base plate, suggesting it was made after circa 1874 but before circa 1900.

Physical Description

One dark green glass beer or wine bottle base. Has a maker's mark: 'R. COOPER & CO PORTOBELLO'. This firm was in production between 1866 and 1928. Was manufactured in a vented mould with a separate base plate, suggesting it was made after circa 1874 but before circa 1900.

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