Art Deco chandelier set

These lighting fixtures were in my house when we purchased it 13 years ago. At that time we had someone offer $500 for one of the chandeliers but we declined. I dont know much about them other than they probably fall in the Art Deco category. I have 4 different fixtures in all(2 identical chandeliers, a smaller chandelier, and the globe light) All are in great condition. I would just like to know more about them and their worth to possibly sell them.