Older Boker Tree Brand knife. I think this was made between 1900-1924 and is a serpentine whittler but I'm not sure. Knife is 3 7/16 inches closed and has 3 blades and green bone handles. The main blade has Boder Soligen Germany Alemania on it and no other markings on the blades. All the blades look near full and have good snap. One hairline crack on the front handle at the pin.