I believe this watch is a 1968 Beau Brumell calender watch,with a 10 KT GF gold case,with diamond face. It is marked 23 jewels and self winding on the face.
looks like mine Beau Brummel "EE"
Nice watch! This one puzzles me. It has the case shape and face configuration of a BB "AQ",
like this one
https://www.mybulova.com/watches/1966-beau-brummel-9233
However it is the wrong jewel count and gold color. I agree it's a Beau, but variant is a current unknown for me - still looking.
1968 Beau Brummel
In reply to Nice watch! This one puzzles by neetstuf-4-u
I agree, thanks for looking!
Is it white or yellow gold? The photos look like yellow gold to me but could be the lighting. If yellow gf I would go with the ad in jabs link of 1968 Beau Brummel "FF".
In reply to Is it white or yellow gold? by Kathy L.
"EE" and "FF" have stones placed at 12, 3, 6, and 9. Subject watch has a date window and stones at 2,4, 8 and 10.
In reply to "EE" and "FF" have stones by neetstuf-4-u
Oh gotcha, yes then no variant for now.
It is yellow
1968 Beau Brummel, no variant.
Advert found and posed by Ken so the Beau Brummel "AT variant ("AU" is white gold)

Excellent ad!
1968 BB "AT" looks to be a match!