About: http://webisa.webdatacommons.org/7956231

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	The US bank note stamps were enhanced with security features such as the grills and the secret marks incorporated into the stamp design.
http://www.w3.org/ns/prov#wasQuotedFrom	2-clicks-stamps.com