I have little information on this watch outside that it may be 1920's. I have found nothing equivalent in the database or through Google searches. I want to determine restoration concerns before I start. I have not opened the watch and probably will not until I hopefully can learn more.
There is text on the inside of the clasp that I can only read as Breton Gold Filled top Pat Pen.
My recommendation, take the watch to a watchmaker and have it evaluated for repair if it not running. Chances are it probably needs a complete disassemble and cleaning. This watch is not a 1920's watch. On the backside (caseback) there appears to be a letter/number combination that I can't read, if you could provide this info it would help.
I have several of these "Rose gold" watches that still remain unknown as to a name.
It is not from the 1920's, the date code is stamped on the caseback...

Looks like late 40's 48, A9, can't quite make it out.
Her Excellency "G" is a close match, so opening up the case and getting the jewel count off of the movement will help.

Way to go Greg! That's the ID I needed for mine, right year period. Excellent
In reply to Way to go Greg! That's the ID by simpletreasures
And I only had 2 cups of coffee this morning Bob, its going to be a great day!
Happy Thanksgiving!
And Happy Thanksgiving to you also buddy! Thanks again for the ID
Thanks very much all for all the assistance here. Sincerely appreciated!
Pending your verification of the movement/caseback details you'll nee to change the original post to show the correct year, model ID, and other specs. Easy to do under the "Edit" option on your original post.
Happy Thanksgiving!
Nice pickup OT, I concur.
Sorry. I just went in tonight to move and looks like someone had made the change. Thanks again.