![]() ![]() Keep in mind, hard rubber buttons, with the exception of diminutive sizes, are always back marked but not all will carry the Goodyear patent information, those being made after the patent expired. Thanks to: Lise McIntyre, Dick Clark, Jim Hall, Karen Beuning, Lori Plichta, Margaret & Willie Tolbert for these great images. There are rare back marks and errors which are highly sought by collectors of these rather utilitarian and plain looking buttons. Many carry just the word Goodyear's and "P=T", an abbreviation for Patent and the year 1851. During the life of the patent Charles Goodyear held (rubber hardening process), all buttons made of hard rubber had to carry evidence of his patent. The most common company back marks to find are from: Novelty Rubber Co. ![]() Goodyear simply held the patent for a period or time and most examples carry some form of the Goodyear patent back mark. Collectors call these "Goodyear" buttons, but this title is incorrect. Here are some Civil War and post-war antique hard rubber buttons. ![]()
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