About: http://webisa.webdatacommons.org/207657316

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Accoding to Anne Clifford, in her book Cut-Steel and Berlin Iron Jewellery, there is not any literature, such as pattern books or advertisements so dating is imprecise.
http://www.w3.org/ns/prov#wasQuotedFrom	imageevent.com