I had this Korean war helmet for some time. It has heat stamp M151A with green buckle chin straps and a Capac liner with green webbing. My concern is the cover because I have heard these are notoriously copied. There is no stamping on it anywhere. I also believe the camo pattern on the liner is suspect. Can anyone judge by the photos. Also, there are names on both helmets and was wondering if they can be traced. One has James Hoban 239-78-737 and the other is Carl Sain 244-92-627. Thanks for any help you can provide.