Thank you for making your question to JustAnswer. My name is*****'m an Antiques Expert and I will try to help you with your particular inquiry. Please, don't hesitate to contact me any time or to make follow up questions if needed.
Each set has to be carefully examined and reviewed to provide an answer. For example, the Solingen set is most likely to be silver plated-around 30-40$ each place settings- but there are set made of sterling-400-600$ each place settings. If you don't mind, I can answer the Solingen set in this question, and then we can continue with the other sets but on different questions. Is this ok for you?