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| Start / | Knowledge / | Separation Methods / |
| Accidentals | Changes | Designs | Differences | Errors | Fakes | Kinds | Mistakes | Parallel Issues | Printers Waste | Safety Measures | Quality |
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Knowledge / Separation Methods / Perforations / Designs |
Perforation Design: artistically designed perforation holes |
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Circular Perforation Holes: perforation with circular-shaped holes |
Ellipticale Perforation Holes: perforation with oval-shaped holes |
Diamond-shapede Perforation Holes: perforation with diamond-shaped holes |
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Dinosaur Perforation Holes: pictorial representation of dinosaur as perforation holes |
Oak Leaf Perforation Holes: pictorial representation of oak leaves as perforation holes |
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Ellipses Perforation Holes: pictorial representation of ellipses as perforation holes |
Circle Perforation Holes: pictorial representation of circles as perforation holes |
Cross Perforation Holes: pictorial representation of crosses as perforation holes |
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Star Perforation Holes: pictorial representation of stars as perforation holes |
Star and Crescent Perforation Holes: pictorial |
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USA Perforation Holes: pictorial representation of the letters USA as perforation holes |
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