how to ID a small , med or large M56 Stalhelm by photos
on small to medium sized shells the net will easily fit over the shell and clip around the edge as shown
if it’s a large shell or size III the net will be too tight to fit over the area on the side where it curves as shown and one of the metal clips will need to be removed, too tight on a size III shell
since sometimes the helmets have been repainted or the stampings are not clear enough to read the original markings
you can also tell by the measurements, a size III should be around 12.5″ from front to back of the visor and about 6″ tall
medium shells or size II are around 12″ from front to back and 5 3/4″ tall
anything smaller is a size I shell [small]