Victor De Leon v. State Texas

Officer Chevera testified that appellant sold him two balloons of heroin on the day in question. Chevera later met with San Antonio Detective Cuellar, and a field test indicated that the substance in the balloons was heroin. Both officers then placed their initials on the balloons and put the balloons in an envelope. Chevera testified that the envelope was sealed, and the date, a description of the contents and the officers initials placed on the outside. The envelope was given to Officer Cuellar. Officer Chevera testified that the contents of the envelope which he examined during the trial were the same balloons which he purchased on June 19, 1972.