Yep. Those youth 243s were special ordered by the (guess who) Rocky Mountain Elk Foundation, whose headquarters is in Missoula, Montana. I undestand they were sold at auctions and fund raisers for the foundation. They were not sold to the general public. What you have there is what I would consider one of the rarest!! While the 35 Whelens and 280 Remingtons hit the used gun market from time to time, I have never even seen one like yours.
Wally