Many of these Dutch keys are from the collection of Jan, PA3EGH. He has a great website featuring many unusual keys from the Netherlands as well as from other countries. A link to his website can be found here.
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| Early Dutch Camelback Key Made by the Caminada Brothers, Italian Instrument Makers Who Emigrated to Holland (IZ0KRC Collection) |
Another View of the Caminada Camelback |
Close-up of Caminada Name |
Dutch Postal Key |
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| Early Dutch PTT Key, Ca. 1867 |
Another Early Dutch PTT Key |
Dutch PTT Key, Ca. 1900 |
An Early Dutch Key by W.C.t Hart, Rotterdam |
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| An Dutch Camelback Key of Unusual Design. Maker Unknown |
Dutch Camelback Key. Maker Unknown. (PA3EYM Collection) |
Another Unknown Maker Dutch Camelback |
Another View of the Dutch Camelback |
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| A Later Key by Caminada, Rotterdam |
An Unusual Oval-Based Key by Caminada. Looks a lot like an American Key. (Ruud Van Harskamp Collection) |
Close-Up of the Caminada Name |
Dutch Double Current Key |
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| Gerard Belgian Postal Key. Uses Knife-Edge Pivot Like the American "Victor" Key. |
Wood Based Key by Merkelbach & Co, Amsterdam |
Top View of the Merkelbach Key Showing the Nameplate |
Dutch Postal Key Marked "Ridderhof & VanDijk, Zeist" |
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| Dutch Army "Sinus" Key by Ridderhof & Van Dijk, Zeist. Ca. 1920 |
Close-Up of the "Sinus" Marking |
Another "Sinus" Key. The Lower Contact Strips are Elevated From the Base to Eliminate the Contact Noise |
Unknown Dutch Key With "Holland America Line" Marking |
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| Close-Up of the Holland America Line Marking |
A Later Key by "Sinus" -Ridderhof & Van Dijk |
Dutch Key-Maker Unknown |
Another Dutch Key-Maker Unknown |
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| A Third Dutch Key-Maker Unknown |
A Fourth Dutch Key-Maker Unknown |
Dutch Key Made by W. Zweverink |
Royal Netherlands Army Signal Corps Training Key |
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| Key Made by N.S.F. Nederlandsche Seintoestellen Fabriek (Dutch Signal Equipment Factory) |
N.S.F. Keys With the Covers Removed |
Another N.S.F. Key |
One More N.S.F. Key |
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| N.S.F. Key With the Cover Removed |
Key Used by Dutch Coastal Station PCH |
Dutch Royal Air Force Key |
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