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<p>[QUOTE=&quot;bahabully, post: 1017713, member: 17555&quot;]Geez.. and a used car salesman has seen the same variety of colors and make/models of cars.... but he&#039;s still a used car salesman.</p><p>&nbsp;</p><p>As to oil on a toner.. well, as oil changes are a preventative measure intented at prolonging the live of a car.. it&#039;s anaology would be those measure intended to prolong the live of a toner.. and preventing it from turning black (which is where all toners are heading)... now an expert toner dealer would probably have a &quot;Phd.&quot; in his title.... and would probably be learned in &quot;<b>Metallurgy&quot;, </b> which according to wiki is the domain of material science that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their mixtures, which are called alloys.</p><p>&nbsp;</p><p>Guess my question/s to you would be, could you please provide us all with your level of schooling in this field ?</p><p>&nbsp;</p><p>Examples of expert level questions (imo) would be:</p><p>- how did this coin tone ?&nbsp; Elemental traces of the reactant should be imparted in the skin of the tone.</p><p>- What elements caused the tone ?</p><p>- what level of the reactant remain in the skin of the coin, and at what level is the toning still active.. (ie - how long before she turns BLACK).</p><p>- what ambient conditions will minimize or neutralize the current level of active toning.</p><p>- etc...</p><p>&nbsp;</p><p>You ready to answer those ?.... I bet an expert could, and then would be able to back it up with clinical trials based in documented destuctive and non-destructive testing of various metallic wear studies.... you ever done any ?, or are you aware of the various type of testing equipment needed to even conduct such a controlled study ?</p><p>&nbsp;</p><p>If not, then your most likely an expert in the &quot;sale&quot; and &quot;marketing&quot; of toned coins (granted, these a large part of collecting/investing also),,, but you ain&#039;t no expert in toned coins.&nbsp; At least not by my definition.....[/QUOTE]</p><p><br /></p>

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