Swedish M26 and Finnish used M26 possibly?

I got these Swedish M26 helmets, I think the green one is Finnish used, and I’m not sure about the other one.

The grey one has a stamp on a liner pad that says Lsa, and one of a crown in a circle, with “TV” under it, and it says 212 on the chinstrap.
I have no idea what both the Lsa and TV stamp mean, do any of you guys have an idea?
None of my other Swedish helmets have a marking like this, just an M21-18 with unit markings which look way different.

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