Chalon head
Chalon head is a postage stamp or stamp series.
Overview
Catalogue entries for stamps state issue, perforation, gum and certification. VALÉORINE records this subject so that lots referring to it can be described consistently.
In detail
Postage stamps issued by multiple countries in the British Empire, featuring Queen Victoria, based on a portrait by Alfred Chalon
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Chalon head”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q3049071: Chalon head
Consult the source