Arzberg China

I have been living with my boyfriend and using this china for about 8 months now. I got curious and google searched the stamp on the back. I found several made by Arzberg, but nothing that matched what we have. He said that it belonged to his great aunt, and was given to him after she died. We have been told that it was a wedding gift given to her and her husband in the 1940's. The set is rather random, or possibly  it's what is left from breakages, but is inventoried below.

10 small dessert plates
9 small dessert bowls
8 salad plates
8 dinner plates
11 soup/salad bowls
11 tea saucers
8 tea cups
1 teapot

We are wondering the value of the set. As I said we are using this on a daily basis, but wondering if we shouldn't store it, or possibly try to sell it. A few of the dinner plates have a few minor chips. Everything else is in great condition.

Thank you so much for your time!