Here is a FirstEdge tanto traklok auto first iteration of such. It is not a push button auto but the traklok opens the blade by pulling the slide down towards you. You close by sliding the button forward and it releases the locking mechanism. Hell for stout knife for sure. You can't push the blade open at all with your thumb to get it going. FirstEdge not in business anymore and I know the first iterations of the traklok auto's are kind of rare as this is. Knife works perfect, has been sharpened and carried by me on my boat and used sparingly. Blade is about 3.3", it is a wide heavy piece of Elmax steel that is razor sharp. Uses a .125" stop pin to lock the blade open. Weight of the knife is around 4oz or so and I have the box too. It is surprisingly comfortable in the hand too. It is in very good but not pristine condition. I would say 98%. Asking $150 shipped G&S via PP or a M.O. I also ship fast.