Rolex estimate please

Hi all, I have a ladies Rolex, rectangular 9k gold case, with bowed
long sides. 9K band, originally sold by Saunders Jewellers in Sydney
Australia. “ROLEX” and crown on face, marked Rolex , swiss, and 15
rubies on movement, no ot her distinguishing marks. Circa 1945, the
watch was presented by WD & HO Mil ls to a retiring staff member.
Clean, working and in well cared for conditi on.

Would someone please give me a “ball park” retail estimate please.

Thanks in anticipation. Glenn

Attachment Removed