PORTUGAL
Note the very simple rivet that holds in the whole liner and chinstrap assembly. The chinstrap is not in fact riveted to the underside of the shell brim - the loops riveted on there are guides only, as the chinstrap itself is fastened only to the liner and this rivet in the top of the helmet.
This is the Portuguese-made liner used in the ex-British Mk1 shells used by the Portuguese civil defense (identifiable by the DCT round decal on the front).
NB there is some confusion as to the proper designation of these Portuguese helmets. One authority in Casques de Combat gives it as M917, while Marzetti has it as the M16. For the moment I am going with Portuguese (?) collector Cutilero in CdeC.
The DCT is NOT the same as the Portuguese Legion that fought with the Facists in the Spanish Civil War. The fascist helmets had a simple yellow Portuguese cross (Cruz de Aviz) painted on the front, not the DCT decal roundel.
This is the 'Cruz de Aviz' badge used by pro-Franco Portuguese volunteers in the Spanish Civil War.
This is the badge of the Portuguese Civil Defence, NOT of the Portuguese Legion that fought with the fascist forces in the Spanish Civil War
Designed and issued in 1940. This is the first series, with the original leather liner.
As for the helmet above there are two different appellations - Casques de Combat has M940, Marzetti M40.
Note leather liner and chinstrap with sliding buckle, similar in principle to that used on the M916 and British WW1 mk1 helmets.
This is the refurbished and relined version issued from 1963 onwards, until supplanted by a version of the French M51
This is the replacement liner and chinstrap as used from the mid-1960s onwards.
This black-painted shell denoted Military Police. Normal Army colour was olive green. Navy was mid-gray.
Shell is slightly similar to the Spanish M21 sin ala, but has no outside rivets.