Originally Posted by
Charlee
The 66-1 is a backclamp treadle machine. The 66-3 is a backclamp handcrank machine. That's the only difference between the two.
ETA: Your machine has been altered...the originals had backclamping attachments...your presser bar has been changed out to take side clamping attachments.
So I have a 66-1. I knew it had been changes out. I had been told that before. Thanks for the info. I'm new at this Vintage Machine stuff and have lots to learn. These are beautiful Machines.