Hinged Case measures 31mm lug to lug x 17mm non inclusive of the Crown using Calipers.
White Dial with ornate Center section shows Black printed Arabic numerals, Bulova signature and track.
Hour and Minute Hands are Black Modern style.
A Dustshield and retaining ring appears over the Movement.
Cabochon Sapphire Crown.
Caseback is stamped as shown.
Edit Alex: changed movement from 6AP to 6AF
1929 'UNKNOWN'
Unknown from me. I've checked, as I have a couple of her sisters....also unknown
Looks like you have a movement serial number....
Movement seriel number added.
The Ladies of this era had really good eyesight, I had to look twice to find the Hour Hand, finally found it under magnification.
The Hands are very small.
Unknown from me.
Unknown.
How about a Bulova Princeine
Not Princine.
Note the differences JP.
1925 Princine. Non-rectangular dial.
1929 Princine. Non-rectangular dial.

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1929 'CAMELIA'