A plain shaped 30 ounce clear glass soda syphon with a clear glass internal tube. " A.RICHARDS. / OPUNAKE " is etched on the glass. " BOYD & McRONE / OPUNAKE " is marked on the plated metal top along with the logo of the British Syphon Manufacturing Company Limited " BRITISH SYPHON / Co LTD / LONDON / BS II ".
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