What wappen for this Fahnrich pickelhaube ??

[KAGGR 1870]

Hello
I have this preussian fahnrich pickelhaube
It is black felt made the liner is officer style with brown oilcloth and silk
The visor trim, rear spine and removable spike and his base are in grey zinc
with german silver ring
The four bolts are in german silver
Chinscales in silver plated brass
Iron Officer kokarde with iron ring in silver grey paint
Interior sweatband in brown oilcloth with silk cap
Question
what wappen with is helmet ?? (you can see the prussian eagle shadow)
Regards

 

[weirdpyramid]

Looks like a pioneer helmet because of the fittings but the curved chinscales throw me off, I don't have my books on me at the moment, so I cant be sure. those chinscales look brass to me not silver.

 

[KAGGR 1870]

Hello
I confirm the chinscales and rosette are in brass with nickel or silver thin coat
This is missing on 60% because repeated overcleaning.
Regards

 

[b.loree]

Beamte officer ?? Line Eagle Wappen with small silver eagle atatched to the tail feathers.