Chin strap has been cut down a little. Stamp is so faint not sure if ckl or hkp. Can see two numbers on lot number. 27 WW2 German Helmet original. The item "WW2 German Helmet original" is in sale since Monday, May 25, 2020.This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\Germany\Hats & Helmets". The seller is "ribirc-95" and is located in Richmond Hill, Georgia. This item can be shipped to United States.