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<p>[QUOTE=&quot;GSDykes, post: 3966350, member: 73321&quot;]What you are most likely seeing is machine doubling, however the images, as mentioned, are not sharp or zoomed-in enough. So do more research, work on your photography. You will find it rewarding and stimulating, note an image I copied for you:</p><p><br /></p><p>[ATTACH=full]1044089[/ATTACH]</p><p>Note the rounded humps of the tape on the DD surfaces. Whereas the MD tape is flat, no rounded humps. That is why close-up sharp photography is needed if you wish to get more information. Keep working at it, who knows you may actually have a DDO or DDR in your collection.</p><p>image from: <a href="http://www.errorvariety.com" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.errorvariety.com" rel="nofollow">www.errorvariety.com</a></p><p>Gary in Washington[/QUOTE]</p><p><br /></p>

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