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"PAT. 2517191" was eliminated. | |||
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Insert with "PAT.2517191" | |||
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1967 insert without "PAT.2517191" (There are 2 kinds of insert.) | |||
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Typeface of "Z"was slightly changed. | |||
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Sstraight cam spring and widespread cam spring | |||
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Solid felt cell | |||
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40th Anniversary Zippo | |||
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Reverse side of the inset | |||
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