Just finished is a pair of socks knit with Ewa's Sockenwolle. This yarn is not plied but 4 strands of yarn wound together in a ball, 1 of dark brown, 1 of dark brown/white marled, 1 of light tan (all wool) and the fourth is a dark brown polyamide thread (like sewing thread), so the overall effect of the knitted fabric is a dark brown/tan/white marl which is darker than in my photo. The downside of knitting with this yarn is that it is very easy to not pick up one of the strands, usually the poly thread.
The ribbing is 30 rows of 2x2 with every tenth row purled as used by Nancy Bush in Knitting Vintage Socks page 41. The rest is stocking stitch with a reinforced heel.
Needles: 2.5mm dpns