Circa probably 1940s or 50s. The blade is marked with the eye brand and Carl Schlieper hammer forged Solingen Germany. It is in great condition. The blades are tight and the springs are strong. It comes in a cloth pouch.
German Eye Collectible Folding Knives for sale
Carl Schlieper Eye Brand Lockback - KLC15382 - The Cutting Edge
Carl Schlieper / Eye Brand -4 Blade Congress (Mdl# 56-DS) +Nice stag Handles -1 Eye
Carl Schlieper Eye Brand
German Eye Collectible Folding Knives for sale
Kitchen Cutlery / Campfire
Eye Brand Carl Schlieper Large Congressman No. 60 4 blade brown pic bo
Carl Schlieper Eye Brand Congress - KLC10436 - The Cutting Edge
German Eye Collectible Folding Knives for sale
Eye Brand Post Oak Knife Co.
German Eye Carl Schlieper Congress Stag
German Eye Collectible Folding Knives for sale
German Eye Brand Congress Genuine Stag 56DS