I will put the many different liner systems I found installed in civic helmets on this page. I have a few more to add and I will include a chapter on how the liners are held with the rivets. So to be continued.
Liner with leather in the back glued to the rear tongue. Often paired with a rollerbuckle chinstrap riveted around one D ring and using a clasp on the other side. Helmet shown is a medium weight Edelstahl helmet.
Liner with leather in the back stitched over the rear tongue. A variant of the liner above. Often paired with a rollerbuckle chinstrap riveted around one D ring and using a clasp on the other side. Helmet shown is an M34.
6 tongue liner with rear seam stitched and size stamp on one of the front tongues. Cork spacers are used to make the helmet wearable for a smaller head size. The helmet is a size 66 which normally fits a size 58/59 liner. This one is a 57. Helmet shown is an M35 beaded Quist.
This 10 finger liner is again a little bit different than the ones posted above , it sits in an early M34 shell ,notice how the rear seam runs across the length of the tongue.
Here’s another rear seam stitched liner , note the sweatholes punched in the front and the more glossy leather. The helmet is a beaded M40.
Another liner with bigger sweatholes to the front and different rear seam stithing. The shell is an M34 with bulgy vents.
This leather looks a lot like the one used in M31 combat liner system with the 5 holes in each tongue. The helmet is an M34.
Another example of the M31 style leather but with sweat holes punctured in the front.
Three pad world war 1 style liner. In a Himmler style shell.
Another variant of the WW1 style liner in an Edelstahl medium duty helmet.