I've been searching for the last couple of years for any information about Hugo Koller knives, I have not found any real concrete evidence of when the company was formed, or an exact date it was sold to Puma, I do know it was started sometime in the mid 1800's, exactly when-??? I have about 20 pieces from this manufacturer and they are a real, top quality knife, if anyone here can share any info about the company please do so, I would appreciate it very much.