I purchased this helmet as a christmas present off of ebay it was titled as a WWII front seam helmet but the seam for the metal rim band is in the back of the helmet and I don't the the chin strap clips are period correct, I was previously told that all helmets worn in the past had that metal seam in the front. Supposedly this helmet was worn by a soldier during the second wave of troops on the island of Okinawa. Could some one help me I.D. this helmet before i give it to my future father in law. Or do I need to send it back and call this guy out for selling faulty goods.