[gilles collaveri]

Hi Larry and thanks for the remark on MkIX,

it is very clear, you can see:

"A" then the roundel, and then "B",

there are no hidden letters so, the idea of "A EB" can be ruled out.

It is in fact strange: instead of having the standard:
"two letters"/ the roundel/ "one letter", you clearly have
"one letter"/roundel/"one letter"

and this is absolutely symmetrical , it is the same on both sides;

The mystery stays..

GC