UBB.threads Forums Edged Weapons Army, Navy, and Luftwaffe Forum Luftwaffe Forestry Fighting Knife

'German Military Fighting Knives 1914-1945'
Lists one description as:

Waffen -Loesche Berlin on one side and Ch.A.W. on the other.

And, that they are seen made by several makers marks to include Eickhorn and WKC.

It mentions reproduction proofmarks as being poorly struck and/or too light, and/or uneven.