Shirley had asked about my coverstitch machines so here they are. Both are Kansai Specials. This is the W-8103F for collarette binding. The special binders slip onto the post to the right of the foot. This machine is designed for binding only, not for flat work. It has three needles and top and bottom cover.
This is the WX-8803D, a flatbed coverstitch machine with three needles and top and bottom cover. There are attachment holes in the bed for binding plates, belt loop folders, downturn fellers, etc.