The is is marked ET60 that indicates it is a size 60 shell that can take a size 52 or 53 helmet liner. The number on the inside back of the helmet skirt is the manufacturing batch number. The helmet has had some paint removed and there is some rust pitting on the surface as you can see in the pictures. There no dents or cracks nor holes in the shell so you will be able to restore the helmet just fine.The helmet you see in the pictures is the actual one you will be sent. The item "Czech civil reissue German army original WW2 M35 helmet shell size ET60 inv#634" is in sale since Wednesday, November 7, 2018. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\Other WWII Original Items". The seller is "vit-zemanek" and is located in Czech Republic , EUROPE. This item can be shipped worldwide.