Soviet SSH 36 or M36 WWII Steel Helmet (?)

Good Day, I recently purchased a couple of WWII helmets from an estate sale, which appeared to be one German and one Russian. I am NOT an expert on WWII head wear and so I was wanting to get an informed opinion as to what I think I have. The first is the Soviet helmet, which after online research appears to be a SSH 36 or M36 steel helmet (please see pics). If anyone knows better, can you please let me know what it actually is? Any insights would be greatly appreciated and Thank You in Advance! - Doug

 

the leather guts would have helped.....
any marks on the metal?

 

Thanks Komokwa, unfortunately I don't have the inside leather nor could I find any kind of mark or serial number inside / outside the helmet. Is there some place specifically I should pay attention to? Thanks Again!

 

@the blacksmith

without marks I'm out of my depth...

 

Thanks... Just had someone on Facebook jump on the grenade. It is actually a Swiss 1918 version helmet. Had no idea! Interesting!! Thanks again!!