This beautiful 14K gold ladies Bulova belongs to my mother, who has owned it for over 50 years, and was given to her by her own mother. M9 is stamped on the case back and movement which tells me this watch is from 1969, but I haven't been able to place a model. Based on the movement model and number of jewels, my best guess would be a La Petite, Leading Lady, or perhaps a Golden Goddess.
Welcome to myBulova and thank you for sharing your mother's watch with us. It is a beautiful heirloom and made even more special that your grandmother gave it to her. It is a Golden Goddess "GG" from the 1969 linebook.

1969 Bulova Golden Goddess "GG"
In reply to Welcome to myBulova and… by Kathy L.
Thank you for such a quick and definitive response, Kathy! Knowing more about this watch makes it even more special, I'm very grateful.
Well found, Kathy.
1969 Bulova Golden Goddess "GG"
1969 Bulova Golden Goddess GG - What a lovely family heirloom.