In the image above you can see a close up of micro set numbers and the letter 283X. I posted on this set a week or two ago.
After some digging, I have found what appears to be a most interesting result. 283X is apparently an Admiralty message dated 1944 and it relates to Top Secret Naval operations during that time. However, we do not have any evidence that these messages are genuine, provenance must be established before we can be certain of this.
You can read the full message thread here:
http://www.uboatarchive.net/Admiralty/AdmiraltyMessage1944-MAR-Frame.htm
Is this a 'coincidence' ? Or is it another piece in the puzzle that might just give us a lead worth following?