<#proof=proofs>, in various colors, of previously issued <#stamp=stamps>, created for display at the 1881 Atlanta Cotton Exposition.  Example: Scott 116TC.

1) the day a <#stamp> is removed from sale by the <#usps=Postal Service>.  2) a <#slogancancel-gen=slogan cancellation> applied to stamps on the last day of sale.  A "Last Day of Sale" cancellation was used for the first time on March 16, 1997.

a method of <#stamp> separation in which thin layers of paper are removed by grinding instead of cutting or punching.  The result resembles <#perf=perforations>.

term used by the <#usps=United States Postal Service> for stamps intended for use on mail.

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>.