Ersatz Model 1895 Preußen Rolled-Edge Filzhelm
 
Ersatz Model 1895 Preußen Rolled-Edge Filzhelm (felt helmet). This example was manufactured as a Model 1895 with brass fittings, but without front visor trim or rear spine.

To reinforce the body and add strength, the manufacturer rolled and sewed the entire circumference of the bottom edge which helps the Pickelhaube retain it's shape.
A view of the Preußen Eagle Wappen (front plate).
A rear view showing that this pattern of Filzhelm was made without a rear spine.
The side profile, showing that this rather scarce pattern of Ersatz Filzhelm is in very nice condition. Note that as is typical for an Ersatz Filzhelm, the liner is sewn completely around the circumference and the stitching is visible on the exterior. As well, the rolled and sewn bottom edge stitching is also visible completely around the circumference of the exterior.
The liner is the standard Ersatz Filzhelm pattern, being of relatively thin leather, sewn to the inside of the shell.
The liner is stamped with the manufacture's mark of "J. Bambus & Co." This marking is usually (but not always) found impressed onto the liner on this pattern of Ersatz Rolled-Edge Filzhelme.

Construction details on all rolled-edge Filzhelm I have encountered are identical; which seems to indicate that the rolled & sewn edge Ersatz Filz Pickelhaubes were made only by J. Bambus & Co.
A nice photo of a Preußen soldier wearing an Ersatz Model 1895 Preußen Filz Pickelhaube.