Ken, For an idea of the value of a dinner bell, put "prindle station" in google and go to their site. They bought the casting moulds for the C. S. Bell Co dinner bells. On their order form you will find the current prices.
For more information on the firm which made your bell, click the home page of this site (the ABA), then click Library, then click Bell Basics, and finally click the article: C. S. Bell Co of Hillsboro, Ohio. There's more there than you'll want to know. -- Neil
I collect U.S. church and fire tower bells and research the foundries which made them.