I have 2 Singer 66-1 treadles with the red eye decals. They are wonderful machines to sew with.
I also have 4 other Singer heads for my 3 Singer cabinets; the other treadle is a Pfaff
model 60. I do most of my quilt piecing with the treadles. I have electric machines too, they usually only get used when I sew away from home.
Sharon