blendwater
Nice model
Model Created in Zbrush and checked in Netfabb. It is 400K polygons.
If You intend to print it and put the helmet on a character, it would be a good idea to see if the thickness of the model allows it. I can help with making adujstments, if needed. Feel free to ask me any questions about the model you might have. NOTE - the head used in preview images was for display only and is not included.