Spitfire AD554 Bexley question

Hello, I have been reading this forum for a few years but this is my first attempt to ask a question 🙂

My question is about the Spitfire VB AD554 “BEXLEY” discussed at this forum a few years ago, here is the link,

http://forum.keypublishing.com/showthread.php?t=16635

I am trying to figure out what the supposed Greek word in front of the Bexley coat of arms could mean and look like. In the mentioned old thread, the “blwfa” ‘word’ is mentioned but that does not make any sense in Greek, as per the people knowledgeable in old and modern Greek I consulted.

Now, as per “GIFTS OF WAR” great book by Henry Boot and Ray Sturtivant, the spelling suggestion is “Pawca”, which is explained to be a Greek mythological creature, but again no confirmation from Greek experts for any interpretations of this word in Greek letters.

Does anybody have any ideas what the actual word could be and look like? The photo is the “GIFTS OF WAR” shows the censored inscription and one small uncensored element on the right hand side indeed implies a Greek letter alpha. I also see that the old thread probably had more images than it shows now, is there any way to see all the pics once attached to that thread a few years ago?

I’d appreciate any input and assistance, thanks in advance.

best wishes,
Alex