Yes the emblem in the middle is hand-milled. The emblem is thus in its original version. It is not screwed, but fastened with leather wedges.
The helmet is very large and heavy. It must have been very hard to keep it on the head.
The eagle in this early version is bigger and heavier than the later eagle. It is made of nickel silver. Look at the feets. They are quite typical for early eagles. The eagle can be attached to the helmet in different ways.
The Kokarde is made of leather with a silver ring.
The helmet comes from an old collection from New York.