the final, approved drawing of a <#stamp>.  It can be in the form of a drawing, a sketch, a photograph, a print or engraving, or any combination, or composite, of layers.

a print made from a <#die> that has not yet been completely engraved, generally made to check the phases of engraving, also known as a <#progproof=progressive die proof>.

on a <#largedie=large die proof>, the impression or indentation in the card made by the <#die=die>.

mid-nineteenth century mail moved by ship in sealed bags from an <#exchangeoffice-gen=exchange office> to an exchange office in another country, containing mail for that country.

mid nineteenth century mail sent from an <#exchangeoffice-gen=exchange office> to an exchange office in another country for further processing and subsequent transmittal to another exchange office.