Found this hand knit sweater at Goodwill. It was almost finished. The neck was not knitted yet. No extra, matching yarn was available. No knitting pattern was available, either. By searching Ravelry, I found a similar pattern, but probably not the exact pattern.

I had to rescue this sweater. I had coordinating 100% cashmere yarn for the neck. I used Zimmerman’s mathematical formula to figure out how to finish the neck.

There were 64 raw stitches at the neck edge. The stitches were on a circular needle.

I decided that Neck should be 72 sts after picking up at front neck edge. Using the sweater mathematical formula the neck should have been around 57.6 sts except for babies, who need more stitches. 72 should be correct.