I need info on this German Eye Brand knife. When did they make

GERMAN EYE BRAND CARL SCHLIEPER JUMBO DOUBLE BLADE KNIFE SOLINGEN GERMANY – Lidia Pereira

Vtg C Schlieper German Eye Brand Twin Set Stainless Fixed Blade Hunting Knife - ePrague, LLC

Eye Brand Congress, Traditional Pocket Knife

GERMAN EYE BRAND CARL SCHLIEPER WOOD SODBUSTER KNIFE 99JR SOLINGEN GERMANY (9554

Carl Schlieper German Eye Yellow Clodbuster -GE99Y

knives-4sale: Vintage Carl Schlieper German Eye Brand Sodbuster

GERMAN EYE BRAND CARL SCHLIEPER YELLOW SODBUSTER KNIFE 99JRY SOLINGEN GERMANY

German Eye Brand Half Congress Glitter Celluloid Old 54P

Eye Brand Baby Lima Bean Knife - Hammer Forged Solingen Carbon Steel Blades - Black Composition Handle - German Made