William Smith
Posted May 14, 2015 - 4:38pm
Your watch sure does look like the various HE's in that ad you supply above. Full version here. It shares HE characteristics, and looks very similar to models in this other Her Excellency ad also from 1947.
I've been looking for an exact match (and possibly a tentative variant designation) but to no avail.
I'm good with a tentative 1947 Her Excellency for your watch ID.