A while ago (maybe even a few years ago) I was given a Bletchley Park mug that is black when cold. When it heats up (from having a hot drink inside it) it turns white and reveals a sequence of pictures and a message about Bletchley Park at the top.
It was given to me as a gift by my brother after he'd visited the Bletchley Park Trust/Museum some time ago (years but not decades). It was sold at the gift shop there. I never really looked at it in detail before but I brought it into work today and when I looked at what the heat revealed I noticed the code. To add context Bletchley Park is where the UK code breakers who cracked the German Enigma Codes during World War 2 worked.
At the bottom is a sequence of letters:
DBICE ENVSY FKJNZ WPFWU LW
This isn't a simple shift cipher (I checked for that) but the general letter combinations and suchlike look valid for it to be a coded message of some sort. It's been a long time since I did any code cracking and this sample isn't really long enough or containing any double letters for the tricks I vaguely remember to work.
It does seem suspicious that it is blocks of 5 characters in each "word" apart from the last 2 so the spaces could well be misleading.
Given the context of where the mug came from I wouldn't be surprised to find the phrases "Alan Turing" or "Bletchley Park" and/or "Trust" in the translated text somewhere.
Is anyone able to decipher it?
(Note that it is most likely in British English)
The mug hot