Message:

<p>[QUOTE=&quot;GDJMSP, post: 2032625, member: 112&quot;]Good write up, but I&#039;d qualify your last statement a little bit to - &quot;no easily visible hairlines&quot;. The hairlines are there, they are just very fine and hard to see.</p><p><br /></p><p>That is what polishing does, it takes a courser surface and makes it smoother. And it does this by moving and removing metal. For example, when a die is polished it is done with successively finer and finer grits of diamond dust paste. The finer the grit, the smoother the resulting surface is. And if you use a fine enough grit you will eventually get to the mirror like surface of a Proof die. Polishing is precisely what creates the mirror like surface of a Proof die. And even on a Proof the hairlines are there, but they are all parallel to each other just so fine that you cannot see them without extreme magnification.</p><p><br /></p><p>Similarly, when a coin is polished the same kind of thing happens. The luster, if there is any, is destroyed. And it is replaced with the surface having very fine hairlines covering the entire surface of the coin making it &quot;appear to be&quot; uniformly smooth and reflective. But for a coin this is not a natural state and that&#039;s what makes it so easy to see.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in