Looks like that further discredits the accuracy of the image depicted below. The shield is too tall and too wide. And as you pointed out earlier in this thread, the Zulu chief Shaka would likely have been quite stout.
Shaka
http://en.wikipedia.org/wiki/Shaka_Zulu
Only known drawing of Shaka standing with
the long throwing assegai and the heavy shield
in 1824 - four years before his death.
Do you really see Michael Caine beating that bloody, great Zulu in a wrestling Match??? 
Regarding drawing of Shaka, it was standard practice for the period for Western artists to render Africans and other native peoples as idealised versions of European bodies (or caricatures, depending upon their intent).
Like this, which bears no resemblance to what Australian Aborigines looked like and has everything to do with classical European artistic renditions of the male form at the time. Note the bloke in the middle, in particular, whose body looks like something from an art student’s book from da Vinci onwards.
Yes, that remained pretty much the norm, until someone brought a Hottentot woman, whom they named Venus, to Britain and then took hero on a tour of Europe. The ‘bustle’ was designed for women to replicate her curvacious behind. Suddenly, art, regarding Africans, began to resemble their true anatomy although some caricatured it, which was rather more demaning than the those pictures posted by RS.
http://hellonegro.wordpress.com/2007/07/26/hottentot-venus-or-just-a-big-booty-magazine-cover-model/
Well, er um…actually no
Perhaps, that which most of us forget, or neglect, when discussing the Anglo Zulu War, is that there were 3 British columns which invaded Zululand.
Number 4 Column was lead by, arguably, the two most able British commanders of the time. They Being: Colonel Evelyn Woods and his deputy Lt Colonel Redvers (Reevers) Buller. Both men were prot’eg’es of Sir Garnet Wolsley.
The last of the three British invasion forces was N01 Column inthe south, under Colonel Charles pearson of the Buffs.