WKC = Weyersberg, Kirschbaum & Companie.
38 = 1938 - date of manufacture.
4812 = individual serial number of the bayonet/scabbard.
The Waa/Eagle marks are the military inspectors acceptance stamps.
The marking on the frog indicates the manufacturer but I can't help with this - not sure if there is a list about.
It looks like a late war piece to me - perhaps some else can confirm.
Hope this helps.
Appreciate the help mate thanks.
Does anyone have any idea as to value. I gave £140 for it. Not something i normally go for, just couldn't resist this one.
Good price for matching numbers, good condition and the late war frog.