The Texas Department of Health used these branding irons to indicate crated, packaged, and processed foods were inspected and fit for consumption. The above example is a Model 84 iron, manufactured by The Great Lakes Corporation in Chicago, Illinois. The Great Lakes Corporation also manufactured food packaging equipment.
This branding iron was used in the 1950s. The brand reads: TEXAS INS. & PSD. DEP. OF HLTH 651.