I've had this Spyderco for at least 15 years. A nice, lightweight blade. Just curious what the actual name is and the type of steel. Only marking is P31.

knife 1 by photo80305, on Flickr

knife 2 by photo80305, on Flickr

knife 3 by photo80305, on Flickr

knife 1 by photo80305, on Flickr

knife 2 by photo80305, on Flickr

knife 3 by photo80305, on Flickr