Hi warrior. Welcome to the forum. I'm not sure we have any currency experts here, but if we do, they would need to know the condition of your note before they could even guess at it's value. Does it have any tears, marks, holes, etc.? Is it crisp, gently folded, tightly creased, crumpled, etc.? Is the ink faded or intense? Do the colors appear to be true to the original? You get the idea.
Can you provide a picture and a detailed description? A 100 Franc note is not consistant with it being a German issue.
Here is a 1910 German 100 Mark banknote. Is this what you have? FRONT (click to view) BACK (click to view)