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<p>[QUOTE=&quot;Numbers, post: 551794, member: 11668&quot;]What happened was, the sheet *before* this one went through the face intaglio printing with a big corner folded down.&nbsp; Thus, some of the ink that *should* have ended up on the front of that sheet, was instead &quot;printed&quot; onto the flexible backing that presses the sheets against the printing plate.</p><p><br /></p><p>Then when *this* sheet came along, that wet ink on the backing was transferred to the back side of this note.&nbsp; So there&#039;s a mirror image of (part of) the face design appearing on the back, at one corner of the sheet.&nbsp; (Since this note has plate position E3, it was located at an upper corner of its 32-note sheet....)</p><p><br /></p><p>Actually, it might not have been the sheet *right* before this one that was folded.&nbsp; Usually enough ink gets transferred to the backing that several consecutive sheets end up with visible offset transfers like this.&nbsp; They get lighter and lighter until they vanish, and of course the darker ones are worth more premium.</p><p><br /></p><p>The converse error, with a mirror image of the back design appearing on the face, is also possible.&nbsp; And if the first sheet is torn rather than just folded, it&#039;s possible for the edge of the transferred design to be irregular rather than a straight line....[/QUOTE]</p><p><br /></p>

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