This is a vintage Tekna Hidden Edge Locking Pocket Knife from the 1990s in black color. The knife has a manual opening mechanism and a plain blade edge. The blade range is under 3 inches. It is very light and the blade disappears into the handle. It has a precision ball lock to open and close the blade. Serrated tang grip permits a one handed rolling opening. This knife is extremely hard to find. It is an original and authentic item, perfect for collectors of vintage folding knives. The knife looks like it was never used. May have been carried. Check photos. It will make a great addition to any collection. No box or original packaging.