Swedish M37 WW2 Era Helmet With Liner

Here is my Swedish military M37 style helmet with original liner and decals. I have learned that while the Swedes never saw combat in WW2, the M37s the newer model of the M26 which were used before. The M37s were used until the 1970s.

Historians online have told me that this liner looks very old so it could very well have been worn by Swedish troops during WW2.

I bought it for $45 at an antique store, if anyone has any information about the value or rarity of this piece it would be greatly appreciated!