Anne,
From what I've learned the 222 is just a 221 but with a free arm. So yes the attachments will work.
Congrats on a good buy. I don't know what the Featherweights are going for over in Europe but over here they seem to be running from near $300.00 USD (230 EURO) to almost $500.00 USD (383 Euro) depending on condition and completeness.
So 50 EURO (aprox $65.00 USD ) is a very good buy.
Joe