Features a Gibraltar Barbary macaques monkey on a rock in the centre.

The Barbary macaque (Macaca sylvanus), also known as Barbary ape, is a macaque species native to the Atlas Mountains of Algeria, Libya, Tunisia and Morocco, along with a small introduced population in Gibraltar. It is the type species of the genus Macaca. The species is of particular interest because males play an atypical role in rearing young. Because of uncertain paternity, males are integral to raising all infants. Generally, Barbary macaques of all ages and sexes contribute in alloparental care of young.

Depicts the weight unit of 1 oz in different languages with the prooftag sealed serial number. Features the Heimerle + Meule GmbH mintmark.