Witcham Gravel helmet
... that the Witcham Gravel helmet is the only known Roman helmet of its kind?
... that the <b id="mwA54"><a href="./Witcham_Gravel_helmet" id="mwA58" rel="mw:WikiLink" title="Witcham Gravel helmet">Witcham Gravel helmet</a></b> <i id="mwA6A">(pictured)</i> is the only known Roman helmet of its kind?