FZ1, rather than asking an auction house to sell the items, you could contact them with the intention of finding out their current value. In the past I have spoken to a few UK based auction houses with regards to finding out the value of German equipment of WW2 origin. The ones I spoke to were very helpful. As is currently being debated on another thread right now, the value of an item depends on exactly when its being assessed and by whom. These things are never fixed, so it might be worth seeking advice from various sources, then making up your own mind. After all, what are they worth to you?

One thing I would advise against is going to museums. It is against most museums’ policies to offer advice on the value of an item, purely because of the risk of inviting a subjective point of view. Museums should’nt provide such a thing.

Do some research from different sources and make up your own mind. Don’t be afraid to contact collectors and auction houses directly. You’ll have to be savvy, though.