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The pictures below are from two early machine made medicine bottles.I have put up pictures of the lips so that the readers can see how they mold goes all the way over the top as shown below. This is different than an older hand tooled, hand blown bottle.To aid beginning collectors and those interested in bottles I have developed a number of bottle time lines.These diagrams should help clarify age differences based on both form and function.
Goffes bulb codd hybrid: photo by Grahame Smith 27/12/2016 Added LONDON - WILLIAM NORTH to the family links page Added Colin Stott's request for West Cornwall items to the wanted page 03/05/2016.He also explains the history and methods of early bottle production, and how diggers find bottles. Dating antique bottles requires knowledge of the evolution of bottle technology and the ability to research manufacturers and bottling companies.' Often beginners have a difficult time distinguishing between old and new bottles especially when is comes to modern reproductions.One can find quite a bit of information on my web site and across the Internet about dating bottles based on whether the mold seam goes up and over the lip or if the bottle has a 'pontil' on the base.
Key sections include dating, typing/typology, glassmaking, colors, finishes, bodies and seams, bases, fragment identification and a glossary.