Unknown Case Serial and Unknown Movement Serial Numbers

I am new to this forum, therefore, I hope I am using and searching the website correctly.  I inherited a 1926 ladies, 14K white gold filled, watch with sapphire in crown, for which I cannot discern any information.  There is no patent number.  I am hoping that maybe someone more knowledge can enlighten me.  Here's what I do know:

Manufacture year = 1926

Movement model = 6W

Movement code = Triangle

Movement jewels = 15

Movement serial # = 73032

Case serial # =517997

Case shape Rectangle with cut corners

Case manufacturer = Bulova American Standard

I thank you in advance for your kind responses.  Sincerely, Nancy