None of my featherweights have 221 on them and I don't think any of the older models did. My featherwieghts were all made between 1947 and 1955. At first I wondered why my machines were all about the same age and then I realized that their original owners who probably purchased them soon after getting married (both my mom and MIL did) are now deceased (estate sales) or down sizing and entering long term care and having auction or garage sales to clear out possessions. I'd like to find a 222 model (open arm) or a tan one.