Rainbow Trials testing of cancellation ink

Hear this page read aloud

To enable the content of this page to be read aloud, download and install the latest Flash Player from Adobe's web site

Download - Help with audio

Image of Rainbow Trials testing of cancellation ink on Penny Black stamps


There were concerns that people might try to reuse the postage stamps by wiping off the cancellation mark. The ‘Rainbow Trials’ was the name given to the trials of different coloured inks and cancellation marks.


Go back to main Gallery 3 page