Non German/post war M42 variant?

[CheapHelmetEnthusiast]

Hello,I found this helmet for sale online, it looks like similar to a M42 due to not having the rolled edge, but I cannot see any German helmet with that rivet pattern. I thought it might be Spanish, but the liner and rivet pattern doesn't look like any example I have seen online. I have not seen any shells with those 4 metal tabs riveted that are visible inside the shell. Any idea what it could be? Is there a guide to non German or post war Stalhelms like?

[Schwerpunkt]

Google is your friend. Bulgarian M36.

[Helmcollector]

M36 c

[CheapHelmetEnthusiast]

I thought of the M36, but I remembered them looking much more rounded like a bell. The angle of the pictures threw me off, Thank you.

[Helmcollector]

video : 'the history of the Bulgarian helmet' ....interesting !

https://www.youtube.com/watch?v=oI5MjjAQgIc

[MAP]

Here is a better angled photo of the M36




Kudo's to Ripper who gifted this to me.