Not sure if these are of any use   https://stephentaylorhistorian.com/2020/06/19/german-ww2-7-92mm-headstamps-how-to-id-them-manufacturer-list/   https://cartridgecollectors.org/headstamp-codes/  

Thank you all for your replies.   I'm having a hard time trying to figure out what they say and what it means.   Just in the last couple of years I started collecting some WWI - WWII Japanese items, very fascinating stuff! I should have been buying it years ago.  

Jason,   Always wise to reach out to do research and ask questions before purchasing.. Just an FYI, an original SS helmet with single decal or even double decals for that matter are well into the many thousands of dollars... So if someone wants to sell an SS helmet for a cheaper price, it is too good to be true..   Buyer beware   Best    Leigh 

Obviously custom-made.  I can't tell if it's genuine.

From (formerly) "antique-photos.com"  

Many thanks ti "PaulR" and "Brig" for these examples of mounted KVMs.   https://www.worldmilitariaforum.com/forums/index.php?/topic/313911-mounted-examples-of-the-kvm/  

It looks Japanese.  It might be a civil defense helmet.

Both items are reproductions.  The "Frank & Reif Stuttgart" allgemeinesturmabzeichen is a well-known fake, albeit a well-made fake, and the EK1 is certainly not a Deschler product.   https://www.wehrmacht-awards.com/iron_cross/2nd_1st_class/1st_class/ironcross1.htm   https://www.warrelics.eu/forum/1939-eisernes-kreuz-forum/guide-collecting-iron-cross-1939-a-221753/  

Bonjour à tous. J'aimerais savoir quel âge a ce nionto que j'ai acheté 100 euros. Merci… 

A friend of mines son bought this and was told it was ww2 Japanese.  It has a different liner and chinstrap than the original that I have. Can you tell me the approximate year and nationality of this please? Thanks Mark

Standard German Army eagle of the day. 

I see many photos has a stamp on the back similar to this why is it so?