Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Welcome to Postmark Shapes!
Welcome to a forum built around the shapes and structures of postmarks. You can browse discussions on region themes, duplex cancels, scan sharpness, and album sequences, and share your own observations when ready. Guests are invited to read freely and join in wherever a topic fits.
You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Circular and Duplex Cancels
A forum for circular and duplex cancellations, their structures, and how collectors distinguish their forms.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.