This four bladed knife is marked on both handles..... one handle (C.F. Blanke & Co. St. Louis, U.S.A.)
The other side marked... (Blank's Kafeko The original malted grain coffee)
This knife's blades consist of corkscrew, can opener and two regular blades stamped (C.F. Blanke tea & coffee Co.)
Germany is marked on the back of the small blade...A small hole is in the knife but no picture is inside
I didn't find anything in the books about the knife but found some information on internet ..I believe this knife to be made about 1900
Just curious if there are others out there maybe some different types

http://www.bullworks.net/virtual/blanke/blanke.htm
https://www.stanhopemicroworks.com/antp ... louis-1900