imfdb.org - IDing the origin of a bayonet I own

I know many of you are aficionados of classic bolt-action rifles (K98, 1903 Springfield, etc.), so I'm hoping that knowledge might extend to their bayonets. Unfortunately I can't provide any pics, but hopefully just descriptions of markings on it can at least identify its origin.

I can't find a ruler, but its overall length from tip to pommel is, I'd say, around 16 to 18 inches and the blade is spear-pointed with a width comparable to a US quarter.

In terms of markings, it has the following:

"WEYERSBERG KIRSCHBAUM&C (a symbol that looks like a lowercase O with a dash under it comes immediately after C without any spacing) SOLINGEN" stamped on one side at the base of the blade. The grip panel on this side (made of a dark-colored wood) is stamped with a 3-digit number of which I can only make out the second and third digits, which are 3 and 5 in that order.

On the opposite side is a small shield (shaped like this: http://www.american-biltrite.com/dat...eld_Orange.jpg) with a 5-point star on it in front of a series of horizontal (middle of the star up) and vertical (middle of the star down) lines, with another symbol beside it which looks like the international biohazard symbol except it consists of three complete circles instead of having the BH symbol's "prongs". Stamped in the handguard on this same side is a symbol that I can't recognize or describe (shaped somewhat like a capital E, but isn't one) followed by the numbers 7907.

I've done Internet searches, but most of these old bayonets look alike to me and said searches ultimately led nowhere. It's in good shape and hasn't been sharpened or anything (I have plenty of usable fixed blades), though the grip panels are a bit worn.

I'm not looking to sell it, since my dad bought it for me when I was little. I would just like to know where it came from and hopefully the make and model.