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Diagonal Base Pin Retainer - This design is also know as the black powder frame. Production Dates 1873-1896 |
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| 2. |
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Transverse Base Pin Retainer Production Dates 1896-1940 |
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| 1. |
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Diagonal Base Pin Retainer - This design is also know as the black powder frame. Production Dates 1873-1896 |
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| 2. |
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Transverse Base Pin Retainer Production Dates 1896-1940 |
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