guilloché - Wiktionary, the free dictionary
Regarding guilloché and other document security design features
Guilloche pattern Royalty Free Vector Image - VectorStock
Guilloché - Wikipedia
Optical Guilloche shape.eps Royalty Free Stock SVG Vector
Guilloche Pattern Rosette for certificate, diplomaor other security papers Stock Vector Image & Art - Alamy
The Lost Art of Guilloché — Silverlining
Guilloche pattern Royalty Free Vector Image - VectorStock
The Lost Art of Guilloché — Silverlining
Atelier Wen Perception: Update #4 - Hand-made guilloché dials by the s