sewingsailor

I have an opportunity to buy a Singer 211U X567B for a reasonable price. I've been able to find information on the 211 and know the "U" means it was made in Japan rather than Germany, but haven't found anything, anywhere about the X576B designation. Can anyone help with deciphering this subclass of the 211? Thanks!

There is a Pfaff 118 industrial zigzag that is being offered to me for a great price. I have, however, been unable to find out very much about the machine; I know it is a semi self oiler, has reverse, and comes with table, light and motor. What I don't know, however, is what weight thread it can handle. I saw a youtube video of one sewing on leather but it wasn't particularly heavy duty so I am still uncertain. Does anyone have one of these machines or know if it can handle heavier thread weight? I would like to use the machine to sew sails as well as purses, and some leather jackets. Any info would be appreciated!