The website of a once secret little post office in Milton Keynes is to close in January 2017.
It will be the last chance to view the “little pieces of art and history” produced over 20 years at Bletchley Park celebrating the work of the code breakers.
Originally the undercover mailroom with the secret designation PO Box 111, it became a sub post office in 1947.
When Bletchley Park opened as a museum in 1994 it served as a gift shop manned by volunteers.
In 2012 it was refurbished and officially opened by the keeper of the Royal Philatelic Collection.
The post office closed in 2015 as a result of changes at Bletchley Park that removed private exhibits.
As well as providing a reconstruction of a Second World War post office and the story of undercover mail it issued special stamps and first day covers.
These combined beautiful artwork on handmade envelopes with new stamp issues to tell the story of Bletchley Park and some now fetch several hundred pounds and are sought after by collectors around the world.
The entire collection can be viewed at the bletchleycovers.com website.
A few are still available to purchase including some signed by prominent former code breakers.