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Jacob Karr, 1860-n.d. Karr was a Washington, D,C. watchmaker and jeweler who held various American patents (1864 & 1865), including 2 different on chronometer escapements and at a later date three on chronographs (all dated 1882). His movements, 18s, KW, gilt, half plate movements appear as English ebausches with his patented chronometer (later improved) escapement inserted. Several of these have been examined and at least two have winding indicators. One particular example has a dial that reads "American chronometer!" Regular, standard US movements have been seen with his name on them (jewelers' contracts).

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Unread 08-19-2007, 09:18 PM
Jon Jon is offline
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Default Jacob Karr, 1860--n.d.

Karr was a Washington, D,C. watchmaker and jeweler who held various American patents (1864 & 1865), including 2 different on chronometer escapements and at a later date three on chronographs (all dated 1882). His movements, 18s, KW, gilt, half plate movements appear as English ebausches with his patented chronometer (later improved) escapement inserted. Several of these have been examined and at least three have winding indicators. One particular example has a dial that reads "American chronometer!" Regular, standard US movements have been seen with his name on them (jewelers' contracts). A new example has been publicized and sold at the Bonham sale of June 12, 2014. It is a of a complete different layout and with a simple chronometer escapement; the case is signed "No 1" and this example appears to be either Karr's first watch or his finished patent model.
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Last edited by Jon; 09-01-2014 at 12:49 PM.
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