In our Jubilee Edition Newsletter we published an article on how to replace your old stamps for new bar coded ones as most old ones become unusable this year.  The original date was January 31st, but this has now been extended to July 31st.  So there is still time to use them, exchange them or lose them.   The way you can change them is covered in the article on page 11 of our May 2022  Newsletter available on our website.