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.
In reply to Way to go Greg! That's the ID by simpletreasures