Shown is an officers helmet, basic pattern for Grenadier Regiments 1-12, except for
G.R. 1,4,7 and 9, which wore helmets with the Grenadier eagle, old or new pattern and with battle honours etc. The old pattern eagle shown is pre 1913.
The new pattern eagle was introduced gradually for all regiments between 1897 and 1913. Shown is the old pattern heraldic eagle with an oval FWR shield on the breast. The helmet is presumably from Grenadier-Regiment König Friedrich I. (4. Ostpreussisches) No.5, based in Danzig, as it came complete with cloth cover and red regimental number. The eagle displays a very fine quality fire-gilding. Inside is the normal officers type lining in leather and ribbed silk, the front peak is lined in green leather, the rear peak in red leather, which was standard for officer helmets. This example could be dated as around 1897-1910, probably the latter, as the spike is relatively tall.
Correction: Title of Regiment should read: Grenadier-Regt. König Friedrich I. (4.Ostpreussisches) No.5 - based in Danzig. Friedrich I was the first King of Prussia since it's establishment in 1701.
This cover came with the helmet, however, this is an other ranks' issue, but may have been worn with such