I am not sure what all the markings on the case mean and some I can’t read. I believe it’s the 6BK Movement. The markings inside the case that I could read are 17 jewels, SF, Fifth Avenue New York, Swiss. There is either BL39, BL37, 3437...I can’t tell. The band says Speidel pat 2689450
Welcome to myBulova and thank you for sharing your watch with us. It is a Margo with a lovely two tone model like this one https://mybulova.com/watches/1948-margo-9875. The markings on the inside of the case are service markings. It is a good sign that it was well taken care of to have so many service markings.
Bulova Margo
In reply to Welcome to myBulova and… by Kathy L.
Thank you so much for the information! The watch belonged to my grandmother and I got it when she passed away. Thank you again 🤗
In reply to Thank you so much for the… by dixiecup0103
...and here is a picture.
In reply to Thank you so much for the… by dixiecup0103
You are very welcome. It is a lovely heirloom to have from your grandmother.
Yup, that's her alright - nice find Kathy, HERE is the full page advert
1947 Bulova Margo
1947 Margo
It's a beauty, thanks for sharing!
1947 Bulova Margo is a match. Congratulations on inheriting your Grandmothers watch. Based on the etchings in the case back I think she last had it serviced in 1996 which is relatively recent for many of the watches we see here.