I just got a scan of the reverse of the note, which suggests that it was in circulation, rather than just having been damaged by storage.
The sum on the reverse suggests that the note was paid into a bank and spent some time as part of a pile of old notes, to be withdrawn from circulation. Once the amount of notes in the pile was high enough to be remitted the notes would be sent for destruction. As the pile of notes was added to, the sum was updated.
Some interested person must have saved the note at some stage!
This is interesting, in that if correct, it would indicte that some of the first run of Ploughman notes were not kept for archival purposes and entered normal circulation. There were only eight Ploughman number 000001 Ten Pound notes printed!
