Case Key, Singer Featherweight 221 (Vintage Original) newfw if you so choose

if you so choose

Centennial

I took extreme close-up photos so you could see that the thread is hardly even noticeable

How to Regulate Thread Take-Up Spring

do you know what that would be equivalent to today

Case Key, Singer Featherweight 221 (Vintage Original) newfw if you so chooseThis is an original key for a Singer Featherweight 221 and 221K case and will fit most case styles. Be sure to view the lock and compare the opening with the key inserted. If you need help identifying if this is the key you need, click the tutorial tab to view the history of the different style of cases and their style of unique keys. Watch video tutorial for more information. *This key is not the style for the green case suited for the White