It is quite possible that the devises were made of other than fine silver. However, von Ribbentrop's status in the Nazi Party, granting him SS General's rank, would indicate him having first class uniforms and insignia. When I first purchased the orders and medals of von Ribbentrop, I examined the entire lot from his dagger to cuff links. I couldn't afford the entire lot, but did come close to buying the SS Dinner dress outfit. I settled for the SS cuff links and a extra named vest with SS buttons. However, that was a long time ago and it doesn't surprise me in the least that people are willing to pay unrealistic prices for SS items.I am not doubting that you got $4K for them either. Also, I had an SS officer's dress tunic and visor cap who was in charge of the SS School. The cap insignia was 800 fine silver. All I know about the SS Dinner Dress insignia is from Ribbentrop's and another in a collection just like it in Germany.