Those Weinmann concave rims are GREAT. A bit heavy but darn near bullet proof and they scream vintage all day long. I have both 700c and 27" versions, mounted to different bikes, over the years. The only set, that I have left, is fitted to my late sixties Legnano Grand Premio. I should add that the 700c version come in two widths...
Hang them on the wall? Why not but don't hesitate to use them should an appropriate bike come your way in need of a quality wheel set. Just my opinion. Nice find at an incredible price.