oh my! Using rubber stamps, embossing ink, embossing powder and a heat source is one way to get the job done, but there are other options as well, like embossing markers or embossing pens.

The Post-office Department has adopted the following rules for embossing postage stamps upon envelopes or paper, presented by private parties: 1. Applications must be made to the Postmaster of the ...

One popular innovation to address potential reuse was a waffle-pattern embossing ... This allowed cancellation ink to seep into a stamp rather than sit on top of it, preventing reuse.