The Baron’s coat of arms, as issued in 1790, augmented with a chief of gold ermine, has been registered by the Department of Arts and Culture of the Republic of South Africa and published in the Government Gazette No. 37653 of May 23, 2014, under Government Notice No. 380, for members of the Family Association of the Barons Von Quast (Familienverband der Freiherren von Quast). The description is included in the Government Gazette No. 37307 of February 14, 2014, No. 108.

The family association Familienverband der Freiherren von Quast was founded to unite the individuals (also being name bearers) who are related to Johann Anton Freiherr von Quast and bear the title Freiherr (Baron) and the predicate von. The association was established under Swiss law.