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<p>[QUOTE=&quot;Insider, post: 2779381, member: 24314&quot;]V. Kurt Bellman, asks: &quot;So is it true that while proof coins can and do have &quot;luster&quot;, they certainly should never have &quot;cartwheel luster&quot;, another accurate term that often gets contracted to just &quot;luster&quot;?&quot;</p><p><br /></p><p>Yes, but the meaning of &quot;luster&quot; has been a bone of contention here on CT. Just about all surfaces have luster.&nbsp; I&#039;m typing on a plastic keyboard that is brightly reflecting light (LUSTER) from its top right corner that is close to the lamp.&nbsp; Of course, this is not the same as the mint luster we see on new coins.&nbsp; It is just the way some grading instructors introduce their students to the concept of luster - the reflection of light from a surface.&nbsp; It is different on Proof and Mint State coins, coin types and compositions, and dates and mints within a series.</p><p><br /></p><p>The causes and types of luster from the surface of different coins is a whole other topic.[/QUOTE]</p><p><br /></p>

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