Someone took apart most of your attachments - and it does not look like all the peices are there.
That bent part with numbers? It's not suppose to be bent.
It's part of a Singer tucker, but I don't see the other part.
You also have an older style coil tucker -it's also apart, but looks like they are both there.
Both peices of the adjustable hemmer are there, but it does not look like the small screw that holds them together is there. The two screws look larger - like the bed mount ones.
I'll go find pictures to show you