We were looking this machine over when, all of a sudden, my friend Betsy remembered that she had a very similar machine. She dug it out and lo and behold. It is a Touch and Sew. But an older model. A 603. With metal gears.
Maybe B.'s friend will want this Singer 603. It is a far superior machine. It stitches well, even without a cleaning.
It does not have a built in button holer. But, it has metal gears which will never need replacing.
Seems like a no brainer to me.