I agree, authentic material.
They are not 'for sale'; they are on an auction site.
Good items, go for them!
"In all my years as a soldier, I have never seen men fight so hard." - SS Obergruppenfuhrer Wilhelm Bittrich - Arnhem
No red flags that I can see! All look fine! I particularly like the trapezoid. Bid them up and good luck!
"Much that once was, is lost. For none now live who remember it."