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| | Penoply: Parker Duofold Senior (c1926) |
 | | The original Duofold had a 25-year guarantee, which wasn't quite as extravagant as Sheaffer's lifetime warranty offered the year before. |
 | | Dating Duofolds requires expertise in divining symbols and secret writings beyond my ken, but I am reliably informed that, judging by the type of cap band and the imprint, this pen is a Duofold Senior (a "big red") from from 1926, and appears to be one of the final hard rubber Duofolds. |
 | | The theories most accepted by long-time collectors are (1) that the original Duofold, like the earlier Lucky Curve sac pens, could be converted to eyedropper fillers should the filling mechanism fail, and (2) the fairly rigid point could be used for "manifolding" or making carbon copies, with "Duofold" being another way to say "manifold". |
| www.rickconner.net /penoply/park.01.html (384 words) |
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