In a recent article on the BNJ Research Blog David Greenhalgh discusses the possible exchange of a LON/DON reverse die recut to read CAN/TOR. In reply to a comment posted by Ian Heavisides, David added the following response.
“We know that dies were sometimes sent from London to Canterbury and back again when there was a need at Canterbury (the class 6b Cant[erbury] comes to mind)”
It is the purpose of this short note to amplify the final comment in the above statement.
BNS Research Blog 