Help with a Randall W. Gilbreath folder

[toomanyknives]

So, a buddy got this at an estate sale the other day. He brought it to me to help him figure out something about it. I have searched the net and our site, and have come up mostly dry. I saw that he did some collaboration with Parker, and I found some of his knives that had sold. It's a very well made knife,

So, I was just wondering if any of our members know him, or any other info. I found his address and phone in my Blade guide to Knives and their Values
from back in 2009. But, I didn't want to call and bother anyone, if he has passed. It's a very well made knife, and was wondering if it is a super rare gem.

Thanks in advance,

Kerry