3 ply. One is all Polwarth, one 2 plies of that and 1 of corrie. Not only sampled but swatched. 8st/inch on 2.25.
This is my most successful 3ply Polwarth sock yarn, the right thickness. The Polwarth is softer. The blend is crisper, probably would wear better. It is also yellow tinged and shows a subtle striping, not enough to interfere with patterning.