Central panel of a 200-year-old Shetland Isles shawl pattern. Pattern (and picture) can be found at www.antiquepatternlibrary.org in a book called Beehive Shawls.
The original calls for a slip, knit, psso (skp), but the pattern translator gives slip, slip, knit (ssk). You may want to try it both ways to determine which is easier for you.
Shown with a cast-on count of 20 stitches.