One skein - no label - of what I think was an Art Yarn Ultramerino 6 ply. I got a DK gauge of 5.5 sts/in on size 6 needles.
Today, I put the buttons on my short sleeved Acer, a pattern by Kirsten Kapur. I only had 8 skeins of Silkroad Aran, a discontinued Jo Sharp yarn, in the colorway "Batik". Many of you have made one and are familiar with its top-down construction. I simply bound off after the garter ridge that end the yoke, cast on 6 sts to bridge the underarm between the fronts and the back.