ADRIAN HEALTH SERVICE HELMET, model 1915. Steel helmet with a slightly oval spherical shell, a visor and helmet-cover, and a crest top with two lateral ventilation slits. It features a front badge in stamped and cut metal representing the doctors' caduceus, consisting of the serpent of Asclepius wrapped around a rod, symbolising the tree of life, and surmounted by the mirror of Prudence, framed by the initials "R.F.", French Republic, and encircled by a branch of oak and laurel leaves. Sheepskin basane chinstrap. FRANCE - First World War Very good condition (inner cap missing).