Section 250-102-6 - DESIGN OF CERTIFICATE OF ORIGINA. The Manufacturer's Certificate of Origin shall be on such safety paper as follows: 1. Border design printed by intaglio steel plate process.2. Border design to contain latent image letters, in positive-negative treatment on upper corners when reviewed at prescribed angle.3. Two color underlying fine line duplex tint, printed in colors which make photographic and color xerographic reproduction extremely difficult.4. Inks to be fluorescent, erasure sensitive leach and bleach, which will render evident common types of chemical and mechanical alterations.29- 250 C.M.R. ch. 102, § 6