The machine cancel "finder" can help you identify
a particular marking and the machine which produced it.
One of the more confusing machines is the Barry.
This cancel can be seen with 3 different postmarks
(dials) and 3 different killer designs (as well as
a flag-style killer). This
"matrix" may help you to identify which
Barry type you are looking at. Note, that if
you have no idea where to start, try
the machine type
web page first.
Please note that Barry cancels can often be identifed by the fact that the feeder mechanism for the machine was a series of pins that grabbed the card or envelope near its right edge. If there is evidence of slight pin impressions near the right edge of the card or envelope, the cancel may be a Barry.
The images referenced in this web page will be displayed
in a separate "pop up" window. Some browsers block such
popups by default. Therefore, use of this feature requires
that you configure your browser to 'allow pop-up
windows'. The method of enabling this feature differs with each browser type.