Engelhard Australia was a subsidiary of the US-based Engelhard Corporation, which operated in Australia from 1955 to 2003. The company was involved in the production and supply of precious metals, including gold and silver, and was one of the largest refiners of precious metals in the country. Engelhard Australia also played a significant role in the development of Australia's mining industry.

This bar is a series 3 commercial bar which is believed to be known by a production run of less than 500.

Note: this bar also comes in an unmarked blue presentation box, I am unsure as to the origins of the box.