I cant see the OP's Image, but here is a pretty old McClain knife in the same vein of the Culloden Moor find that Chuck posted. This one is from the late 80's, and was published in IIRC MuzzleBlasts. This is not my oldest McClain knife as I have a couple from the early 70's(A throwing knife and a bearjaw). When my Father decided to quit buckskinning at the end of the Bicentennial, Glen signed up for probably more than he expected and agreed to cart me around to events.
I just picked up my 10th I think, McClain piece at CLA, a Pipe tomahawk that can be converted to hammer poll or spike hawk depending on the task at hand.
Well I didnt actually pick it up at CLA, it was off being photographed and Glen had to bring it to me Sunday.