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<p>[QUOTE="Pat P, post: 66891, member: 201"]Yes, at that time it would have been laid paper. To check if it's laid, hold it up against a light source, like a window. If it's laid paper, you'll see a grid effect, like this...</p><p><br /></p><p>[ATTACH=full]17291[/ATTACH]</p><p><br /></p><p>If it's a recent reproduction, you'd usually see tiny dots under strong magnification. But even more recent reproduction prints don't always have dots.</p><p><br /></p><p>I think they mean copper plate engraving... I believe copper wheel engraving is engraving done on glass. This page shows an example of what a copper plate engraving typically looks like...</p><p><br /></p><p><a href="http://www.antiqueprints.com/Info/engraving.php" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.antiqueprints.com/Info/engraving.php" rel="nofollow">http://www.antiqueprints.com/Info/engraving.php</a></p><p><br /></p><p>Distinguishing between different print processes can be tricky and hard to do online. If it seems like your maps would be worth a lot if they're genuine, you might want to try to find an expert in your area who could look at them in person.[/QUOTE]</p><p><br /></p>
[QUOTE="Pat P, post: 66891, member: 201"]Yes, at that time it would have been laid paper. To check if it's laid, hold it up against a light source, like a window. If it's laid paper, you'll see a grid effect, like this... [ATTACH=full]17291[/ATTACH] If it's a recent reproduction, you'd usually see tiny dots under strong magnification. But even more recent reproduction prints don't always have dots. I think they mean copper plate engraving... I believe copper wheel engraving is engraving done on glass. This page shows an example of what a copper plate engraving typically looks like... [URL]http://www.antiqueprints.com/Info/engraving.php[/URL] Distinguishing between different print processes can be tricky and hard to do online. If it seems like your maps would be worth a lot if they're genuine, you might want to try to find an expert in your area who could look at them in person.[/QUOTE]
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