I got this watch a few months ago scrolling on ebay. It had a broken hairspring when I got it and the case and crystal were in rough shape. After sourcing the correct hairspring I was able to replace the crystal and clean up the white gold case and now the watch looks brand new. The movement date code is M7 and the case is 10k white gold filled, and has an M6 date code.
I would say 1967 Beau Brummel "AE" (Line book 1966)

Nice watch! I have a weakness for BB's.
1966 Beau Brummel "AE"
1966 Beau Brummell "AE" looks like a good match to me.
White gold version match 1966/67 Beau Brummell "AE".
You would expect that the later date was the year of release/sale.
So we could even date this to 1967.
What size/part number for new crystal? Where did you get new crystal from? Thx. I have same watch I am restoring.