Figure 5. Examples of Roold Helmets. Top Left, typical example. Top center, example without a peak. Note the ear holes contain four spoked collets as in the vents of the M1886 Casque Colonial, without the threaded centre. Top right, an example with the tapes missing which usually cover the slit-pin heads which held the layers and liner together. Note the chin strap is joined by either buckles or double buttons. Bottom Left, example with six eyelets in the ear flap. Bottom right, the three layer construction; inner layer is the inner cork ‘cap’ with the liner and headband (a typical colonial helmet plain leather strip sewn to and folded upwards over a compressed fiber backing ring); the thick central layer is the ‘plug’ to the chamber, holding in the padding; the outer layer is the rim of the bell shaped outer cork ‘cap’.