These knives were made [including the auto mechanism] in the Buck Custom Shop with the thought of producing auto. They were complete except for the push button actuator when the project was abandoned. A friend of Rainey Vallotten acquired them somehow and had Rainey install push buttons {I verified this with Rainey]. They have blue/green and tan bark ivory scales with brass bolsters - beautiful knives, as new condition. $900.00 ea, both $1700.00. Contact me for more pics, details etc. Thanks