When I had a closer look on the snowtrooper helmet lately, I noticed something very interesting...
When you compare the snowtrooper helmet with Boba's helmet, it can clearly be seen that they look very much the same: The dome of the snowtrooper bucket is exactly the same as the one of our favorite bounty hunter. Even the "closing/venting slits" in the back of the helmet are totally the same. Also the ring around the head looks much like simoly being the same!
Both helmets must have been casted from the same mold. My suspicion is that Boba has the original mold, while the snowtrooper helmets were casted from it (because they needed much more of them in white). It seems likely that the bucket is some kind of German WW2 helmet, since confiscated, de-activated war material from WW2 was mainly used for props from the original trilogy!
[img] <a href=[/img]http://assall.de/movie-prop/sw2/sw2_12.jpg"</a> BORDER="0">
[img] <a href=[/img]http://tragedy.nu/bucketheads/galleries/snow/snowtrooper9.jpg"</a> BORDER="0">
[img] <a href=[/img]http://tragedy.nu/bucketheads/galleries/snow/snowtrooper0.jpg"</a> BORDER="0">