I have a Winder receiver in the shop that I got from Froggie, complete with welded holes and other welds, that also looks like it hasn't been touched in about 99 years. Look on the inside of the receiver, some smiths weld both ends of the holes but most don't.
AFAIK all Winder low walls had large threads, round unscalloped rings and holes in the side for the Lyman receiver sight. Of course all Winder low walls were coil spring actions.
I have enough parts to assemble a wall action if anyone is interested. If you don't want an action then how about selling or trading me your wall parts?
Regards, Joe