A few pic's of one of my Austrian M 75 Stalhelm its slightly different to all the others that I have in that the flaps are perforated!! also the adjustment is made by moving a snap with three positions (normal on my others is plastic slide) the snaps mfr is PRYM ...on the liner is a has nice HBA mark dated 1977 ... the only marks I can find on the shell are the almost obliterated painted ones but look similar to R.M. ones I have seen online elsewhere... chin strap is typical Austrian stitched on type.. I have 5 m75 in total in my collection.. two of them have the liner clips!! and one is mint unissued!!! although the liner plastic may have been fitted with new leather as it has some real scuffing, one has a stamp on the under side of front seam edge (which I guess is a late shell as its dated with U 81 another detail I haven't seen and the reason for buying it !!! ). cover is made from an old Austrian dot camo zeltbhan and is reversible to Austrian sumpftarn helmet net is original Austrian issue with the thin elastic band.