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<p>[QUOTE=&quot;Insider, post: 2350058, member: 24314&quot;]Idhair, this is not directed to you - just an answer to your question.</p><p>Curiosity is good and so is proof.<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" /> </p><p><br /></p><p>I have done many, many experiments using different chemicals on coins of different compositions.&nbsp; In two seminars long ago we did the experiments with dip and luster.&nbsp; Dip - look&nbsp; Dip - look on an on.&nbsp; Using a control coin there is no detectible difference in luster after ______ of dips.&nbsp; You&#039;ll get no more info from me on this because WHAT DO I KNOW?&nbsp; I&#039;m just a stir-up, ignorant <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie93" alt=":troll:" unselectable="on" unselectable="on" />.</p><p><br /></p><p>If you wish to learn something.&nbsp; Try it yourself.</p><p><br /></p><p>BTW, This entire &quot;DIP NO GOOD it changes luster&quot; started in the 1970&#039;s or early 1980&#039;s when a respected numismatist taught this nonsense.&nbsp; I learned who he was and what he did in at an ANA Summer Seminar decades ago!</p><p><br /></p><p>The &quot;Expert&quot; took a commemorative half over to a window, put a light meter on it and took a reading.&nbsp; Then he dipped the coin and took another reading that showed a decrease in reflectivity (luster).&nbsp; My instructor told us THAT A CLOUD MUST HAVE PASSED IN FRONT OF THE SUN during the second reading <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie52" alt=":hilarious:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie52" alt=":hilarious:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie52" alt=":hilarious:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie52" alt=":hilarious:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie52" alt=":hilarious:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie52" alt=":hilarious:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie52" alt=":hilarious:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie52" alt=":hilarious:" unselectable="on" unselectable="on" />&nbsp; Then we did the experiment with dip and proper methods /when to use it. </p><p><br /></p><p>Until you guys do some tests for yourself...</p><p><br /></p><p>Finally, in some cases even a professional CAN RUIN A COIN&#039;S LUSTER with JUST ONE dip <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie3" alt=":(" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie46" alt=":facepalm:" unselectable="on" unselectable="on" />so...Learn what coins to conserve (some will still blow up) or don&#039;t touch your coins.&nbsp; AND...Quit commenting on subjects that IMO you know <span style="color: #b30000">TOO little about! </span><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" />&nbsp; (red &amp; green look good together).</p><p><br /></p><p>Good Day <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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