Help! Identifying Ladies Rolex

[sumac23]

This ladies Rolex has me stumped. The watch was given by a husband to his wife about 30 years ago and she keeps in in a safety deposit vault since then. It has no papers or box that we can find. The movement seems to be authentic but we have not been able to identify the era. The watch is in good running condition and keeps good time. The face and winder have Rolex logos on them. The band is another question mark as it is marked 14K with a fleur du lis on the back of the clasp and a rolex logo on the front of the clasp, making us think that this could be a factory job bracelet. Can anyone help in identifying the watch movement and possibly if the bracelet is authentic? Can anyone suggest a reasonable price for it??