Hi,
I suggest you inquire about its working ability: is the wiring flexible, does it show signs of wear/repair; does the motor hesitate when pressing on the foot control, does the motor smoke/smell? Can the seller sew out a sample for you w 2 different thread colors so you can see top and bobbin stitching?
If you're not looking to spend alot on the case, you can purchase an inexpensive portable plastic file box & line it with batting. It opens/closes like the actual case, and weighs significantly less (perfect for class)! I use this for one of my 221-Js that came without a case, and personally love it
As a 221 enthusiast who loves their history, I'd also be curious what the sn is.
These are durable, wonderful little straight stitch machines w a high cuteness factor; good luck
Jae