Original German WWII Luftwaffe Gravity Knife by Solinger Metallwaren Fabrik with Waffen Proof - SMF French Artwork & Posters so the underlying steel has

so the underlying steel has oxidized

actually in the form of a vest or short sleeved shirt

and is made to mimic the same general pattern as the WWI M-1918 Mark I Trench Knife by LF&C

It continued in service after then

With no other external markings other than DEFENDER stamped into the top cylinder strap

Original German WWII Luftwaffe Gravity Knife by Solinger Metallwaren Fabrik with Waffen Proof - SMF French Artwork & Posters so the underlying steel hasOriginal Item: Only One Available. This is a very good service used condition example of an early war produced Type I version of the legendary Luftwaffe Fallschirmjger Messer, or German air force paratrooper knife (FJM or FKm). It was produced by Solinger Metalwaren Fabrik Stcker & Co. GmbH, also known as SMF, who were one of the major producers of this knife during WWII. Their etched "Seated King" over Solingen trademark is seen on the blade, though