Babaa 51. Worn sparingly and never washed. I purchased directly from Babaa and am the only owner. In my experience, the Earth yarn pills less than others. No low-ball offers, please. I listed it on the low end because I bought it last year before the big Babaa price hike, and I am only selling because I can knit a sweater that fits me better. (I'm 5'3" and 98 lbs, so one size rarely fits all for me!)