Bulova 1948 Her Excellency

Looks like a match, in 1947 ad below

again in 1948 ad as variant "A" with the wording "also available in white"

I'm still on the fence about a second letter or some other designation beyond "A" to indicate white vs gold.  Perhaps they are both A, with the model number (what Shawkey calls the Reference # in table 1 of his Bulova 23 article) indicating the distinction.  I'm starting to think that in some cases there was a second or different letter designation for gold color choices, and in other instances there was not, and the reference number indicated this difference.  God Bless Bulova consistency!   We need old jewelers catalogs.