The man who taught me knifemaking passed away a couple of years ago, and as his wife was cleaning out his shop she found a knife behind a file cabinet. It is stamped Collins Legitimus #870, Made in Germany,has a stamp of a crown with a hammer in a hand, and has an upswept blade. Overall length of the knife is 26". Handle is approx. 7" long. Anyone know anything about these knives, I have never seen one before. (She is going to sell it, but has no idea of it's value.