Portugal. A First War Portuguese Model 1916 Helmet

A fine example of the rare Portuguese Model 1916 Helmet, in thin stamped steel, presenting the recognizable ribbed design on the crown with ventilation holes around the brim, the interior presents several grommets where a sweatband would have been and the connection for the chin strap (both missing). The helmet measures 313mm (l) x 259 mm (w) x 132 mm (h), exhibiting wear and rusting throughout, missing the interior components, remains near very fine and very rare. 

Footnote: These helmets were available to the British for private purchase, however they were found not to be effective against even moderate velocity rounds. An article written by Doctor C.W. Saleeby, in the Daily Chronicle (07 Aug 1916) stated, "the issues included the poor anti-ballistic qualities of the weak, lightweight metal used. In addition, the ribbed feature caused shrapnel fragments to catch and penetrate the helmet rather than deflecting them. Because of these defects, the Portuguese M16 has the distinction of being the worst helmet of the First World War." They were then banned from selling in Great Britain after 1916.