six-color <#offlith=offset lithographic> presses purchased from Goebel primarily intended to produce <#aerogram=aerograms>.

die in a <#meter> machine which imprints words or pictures to the left of the <#indicium> and town mark

<#perf=perforating> accomplished with a straight up and down action of the perforating pins.

the portion of a simulated <#perf=perforation> on a <#selfadh=self-adhesive <#stamp> that protrudes from the side of the stamp.

the portion of a simulated <#perf=perforation> on a <#selfadh=self-adhesive stamp> that curves inward next to each <#peak>.