Oorijzer, Dutch for "ear iron". Originally a type of iron head-dress worn as peasant jewelry by the women of Friesland, in northern Netherlands, but later adapted as a gold helmet fitting tightly overthe head and worn under a lace cap. It has a cleft opening extending from the brow to the crown, derived from the 17th-century iron type, and is made with rosettes at the side that hide pins whichsecure it at the temples to the lace cap.
Oorijzer

Oorijzer
Oorijzer, Dutch for "ear iron". Originally a type of iron head-dress worn as peasant jewelry by the women of Friesland, in northern Netherlands, but later adapted as a gold helmet fitting tightly overthe head and worn under a lace cap. It has a cleft opening extending from the brow to the crown, derived from the 17th-century iron type, and is made with rosettes at the side that hide pins whichsecure it at the temples to the lace cap.
References
From: An Illustrated Dictionary of Jewelry, autor: Harold Newman, publishers: Thames and Hudson



