Help with chairs trying to figure out if they are worth any thing before I do anything to them

Hey I have these chairs I bought a while ago but I don't want to do anything to them until I know if they are worth any. I don't want to redo them and mess up the value. I can not find any markings on them.
Any ideas?
Really appreciate your help!
Sorry the picture is not that great.

 

Spanish revival dining chairs. Likely from the 30s but possibly a bit older. Not a lot of value for just a couple. Sets of 4 or more would be more desirable.

 

I have all 4
2 are broken but I think they are fixable just minor things
Thank you so much
Should I keep the finish the same or would it be ok to refinish diff?

 

If for yourself, anything you want to do to make them functional to your needs is fine. If finishing for resale, I would probably leave them as original. These appeal to those with Spanish revival homes. Consequently, most popular in CA and the Southwest.

 

Thanks