actually, it's not for leather, it's for sacks.
And so, it has no feed dogs or such. I wonder, if anybody has informations on it.
Or pictures /ideas to build transportation (stitching plate and feed dog are available on ebay, other parts not. But I could also think about something like on Singer 29)
The other special about: it lifts the foot between stitches (shure, very useful, when repairing bags), maybe I can use it for fat embroidery😁