I'll play
Pfaff 130
Diameter .857
Height .345
Center hole .237
Free
Diameter .868 (it does fit in the Pfaff case, and not too tight to spin)
Height .293 (noticeably shorter than the Pfaff, enough that it would move side to side in the bobbin case)
Center hole .233 This does not seem to be significantly different - they both fit loosely around the center pin in the case.
So I stand by my conclusion that Joe has bobbins for the Free/New Home machines from the 30's-40's and not for the Pfaff.
BTW - the Free/New Home of that era were quite common and finding bobbins for them is relatively easy.
Last edited by Macybaby; 12-19-2014 at 08:11 AM.