Attached are a few pictures taken outside this morning before it hits triple digits in sunny SoCal. I placed a minty matching regular M15 spike and a matching pair of regular kokardes on it. The size 57 is stamped on the inside rear trim, and on the wearers left side under the Prussian kokarde is stamped 57 and the numeral 5 under the 57. The maker is C.E. JUNKER and is dated 1916. The minty M15 chinstrap is ink stamped B.A.VIII 1918 and what appears to be the letter G to the right side of the date. Let me know if you would like to see a picture of any specific area or marking. Because of the pictures taken in direct daylight, there might be a little shine on some areas. I've had at least 5 of these and this is by far one of the best I've had/have/seen. Chuck