There are several unusual pieces in that lot. There is a "walking presser foot" (penguin), a singer vintage walking foot for a slant machine, and a darning and a embroidery attachment (hopping foot). There are two different hopping feet. One fits 66, 99 and 201; one fits a 15 and 221, but I'm not sure which one that one is, as I didn't read the description. It appears that the cover plate for that is there, too. A couple of the black top hat cams are hard to find, but I'm not sure which ones they are or if they are in that lot.
I'm no expert on the accessories, I just did an internet search. So, I could be wrong.
Bkay