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<p>[QUOTE="Insider, post: 8293930, member: 24314"]ldhair, posted: "I'm working on it.<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" />"</p><p><br /></p><p>Actually, you answered the question already. When a scratch is parallel to the light it is not as easy to see (and as you can see) virtually disappeared under a 20X microscope. As soon as the light (or the coin) starts to rotate to the perpendicular position, the scratch jumps out. So Overhead is incorrect and 12 o'clock and 6 o'clock is incorrect in this case. EITHER 3 o'clock or 9 o'clock are correct answers. I <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie93" alt=":troll:" unselectable="on" unselectable="on" /> tried to hide the fact that both positions are correct to get you to think about it more - with no luck. </p><p><br /></p><p><br /></p><p>slackaction1, posted: "First, I voted and don't know the answer. How do you define a scratch, hairline or sometimes a very fine scratch will not be obvious unless the coin is in a certain orientation to the light. [<i><span style="color: #660033">This is incorrect. Once you see the mark it can be defined. Everyone needs to learn the difference and because of subjectivity there is some overlap.</span></i>]For most folks, hairlines are best seen in a dark room using a Fluorescent is best for microscopic exams. [<i><span style="color: #660033">Not true, while a stereo scope makes seeing thing easy an incandescent light in a dark room is the best way to search for HAIRLINES on a coin</span></i>] I ALSO break rules and never follow instructions. [<i><span style="color: #660033">That could be a very big problem in life</span></i>]will be back to find answer though!! to learn.."[/QUOTE]</p><p><br /></p>
[QUOTE="Insider, post: 8293930, member: 24314"]ldhair, posted: "I'm working on it.:D" Actually, you answered the question already. When a scratch is parallel to the light it is not as easy to see (and as you can see) virtually disappeared under a 20X microscope. As soon as the light (or the coin) starts to rotate to the perpendicular position, the scratch jumps out. So Overhead is incorrect and 12 o'clock and 6 o'clock is incorrect in this case. EITHER 3 o'clock or 9 o'clock are correct answers. I :troll: tried to hide the fact that both positions are correct to get you to think about it more - with no luck. slackaction1, posted: "First, I voted and don't know the answer. How do you define a scratch, hairline or sometimes a very fine scratch will not be obvious unless the coin is in a certain orientation to the light. [[I][COLOR=#660033]This is incorrect. Once you see the mark it can be defined. Everyone needs to learn the difference and because of subjectivity there is some overlap.[/COLOR][/I]]For most folks, hairlines are best seen in a dark room using a Fluorescent is best for microscopic exams. [[I][COLOR=#660033]Not true, while a stereo scope makes seeing thing easy an incandescent light in a dark room is the best way to search for HAIRLINES on a coin[/COLOR][/I]] I ALSO break rules and never follow instructions. [[I][COLOR=#660033]That could be a very big problem in life[/COLOR][/I]]will be back to find answer though!! to learn.."[/QUOTE]
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