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<p>[QUOTE=&quot;mirana, post: 10313600, member: 79705&quot;]Thank you for the new photos!!</p><p><br /></p><p>It&#039;s amazing that it&#039;s celluloid because it looks like criss crossing lines on back. Amazing mimicry.</p><p><br /></p><p>I found a great, extremely in depth article on celluloid (history, how it&#039;s produced, theories on what causes deterioration, how to forestall that for a time...).</p><p><a href="https://cool.culturalheritage.org/jaic/articles/jaic30-02-003.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://cool.culturalheritage.org/jaic/articles/jaic30-02-003.html" rel="nofollow"><font size="4">CELLULOID OBJECTS: THEIR CHEMISTRY AND PRESERVATION by J</font></a><font size="4"><a href="https://cool.culturalheritage.org/jaic/articles/jaic30-02-003.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://cool.culturalheritage.org/jaic/articles/jaic30-02-003.html" rel="nofollow">ULIE A. REILLY</a> (1991 Vol 30 Number 2 Article 3) on </font>the Journal of the American Institute for Conservation site.</p><p><br /></p><p>She talks about how they produced ivory celluloid:</p><p>&quot;Thin sheets of celluloid were prepared in two colors, one opaque and the other more transparent. The opaque ivory-colored sheets were layered between more transparent sheets of the same color. A block was created out of these alternating layers with heat and pressure. This block was then sliced and the thin slices pressed into another block. The second block, when fabricated, created an accurate imitation of ivory (Worden 1911, 2:683–87). Even at a magnification of 12x structures of celluloid ivory may be indistinguishable from those of real ivory.&quot;</p><p><br /></p><p>Idk about &quot;indistinguishable&quot; since you can tell from photos, and if mine is celluloid then certainly the &quot;structures&quot; look different. Really interesting info nonetheless.</p><p><br /></p><p>She also mentions:</p><p>&quot;Celluloid was machined like wood (sawed, drilled, carved, and planed) and was formed with heat and pressure and blow molded. The technique of blow molding was developed for use with celluloid.&quot;</p><p><br /></p><p>That made me feel rather smart as the first thing I thought when I tapped it was &quot;sounds like a blow mold&quot; <img src="styles/default/xenforo/smilies/biggrin.png" class="mceSmilie" alt=":D" unselectable="on" /> So perhaps it was blow molded and then additionally carved. My only hesitations with that are it was carved into itself on the back making me wonder if it&#039;s solid, and also... I&#039;ve never seen another of this design...YET! So I&#039;ll be keeping an eye out for this guy. I don&#039;t think I&#039;ve seen one of your gal either. I would buy it in a second if I did because I love her design and frame. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie58" alt=":joyful:" unselectable="on" unselectable="on" /></p><p><br /></p><p>The parallel lines I describe are machined into the surface and very fine. They are only on a <i>separate</i> thin clear piece of plastic on the back, and <i>not</i> on the cameo. There are similar on thin sheets of a dance card pendant I have. The back of the cameo has big gouged tool marks.</p><p><br /></p><p>[ATTACH=full]518166[/ATTACH]</p><p><br /></p><p>[ATTACH=full]518167[/ATTACH]</p><p><br /></p><p>Sorry the image is so close but I only have my phone right now so had to crop to keep it under the limit. This photo was taken after he had a bath and the water briefly trapped between the two pieces made capturing the marks much easier. (I&#039;ve since found water should be used with caution or not at all if your piece is deteriorating so anyone referencing this...read the Conservation article! <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie17" alt=":bag:" unselectable="on" unselectable="on" />)</p><p><br /></p><p>The carving scratches on the front are visible best in the white highlights of the other pictures I think. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie97" alt=":watching:" unselectable="on" unselectable="on" /></p><p><br /></p><p>In the meantime I&#039;ve bought a pierced porcelain dish to store it in since per the article, celluloid rusts metal and various metals, the lead in solder, zinc, etc can hasten it&#039;s decline. Also paper pulps and wood are bad. And it needs air flow for off gassing and shouldn&#039;t be kept with other celluloids... I don&#039;t know how celluloid collectors (or museums) do it![/QUOTE]</p><p><br /></p>

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