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<p>[QUOTE=&quot;desertgem, post: 2883222, member: 15199&quot;]Most seem to concentrate on magnification, but as, if not more, important is degree of flatness&nbsp; over the objective field and the mount of color diffraction. A triplet or apochromatic&nbsp; is more expensive but if one is dealing mainly with toned coins, it will give more accurate color registration than a achromatic doublet ( or heaven help a singlet simple magnifying glass as for reading). Some spend $ 50 on ebay for a suspected DD, but only wants to spend $10 on a magnifier.[/QUOTE]</p><p><br /></p>

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