As I see it, there are four or so possibilities:
1) A traditional shawl pattern in a traditional yarn ( a single breed yarn that is traditionally used with that pattern)
2) A traditional shawl pattern in a nontraditional yarn
3) A nontraditional shawl pattern in a nontraditional yarn
4) A nontraditional shawl in a classic single breed yarn (as might have been used in 1).
I suspect that my latest FO is an example of 2). It's Evelyn A. Clark's Old Shale Lace Shawl, also at her website here. We know that this is a "half hap" and that the traditional version is a (normal) hap shawl, a square with the old shale lace around the border. While the wool (Shetland) is traditional, the dying is not, which is why I'm thinkin' this is a nontraditional yarn. You can help me out here, I'm getting confused...
It is my handspun, about 16 wpi, made from a Shetland wool bumps from The Wool Shed in Orkney, Scotland, purchased in 2009. It's pretty scratchy but very lovely, Pam Murray was the dyer. You know, just because the wool bump is soft doesn't mean the yarn will be. But heck, I LOVE Pam's colors and its just the right size for over a jacket, either frontwards or backwards.
At the border I pulled out the points a bit to emphasize the pattern. As I was blocking it, I kept thinking how enticing the old shale is, (the changing color does it justice) kind of the way the ocean is enticing...
Once again, thanks Evelyn and Sharon Miller