It's possible Mick, but.. and it's a big but.. on reflection, if it were a personal engraving, I would expect a less 'restrictive/conservative' engraving/stamping.
Like I mentioned earlier, with the 'Swiss Market' markings on my GMT, it is in a very similar location, same size and style of markings, even if it doesn't follow the coding. If I really had to put money on it, I would surmise that those markings were made before being sold to a customer.

Stewart

: Hi Stewart,

: Thanks for this interesting idea.

: Nor do I.

: So one of the previous owners wanted to be remembered to (the
: inherent meaning of) a bible quotation in certain situations. We
: should not forget that these watches were used as tools. This
: GMT chronograph could be used by a professional on a critical
: mission -- with a little help from the quote.

: Unfortunately I'm not able to trace back the ownership of the watch
: because it was passed on between dealers before I got it.

: Cheers,

: Mick