I have a Singer 29K60 long arm patcher with original treadle stand for sale. This model has the large bobbin. Everything works as it should. It is an old machine so it does have some wear. It does still have intact branding labelling which is kinda cool. Many of these older machines have been repainted. It is located in Canyon Lake, TX and I will not ship this item. It's unfortunately just too big and too heavy to ship for a reasonable amount. I would entertain the idea if it's in the continental US and buyer is willing to cover shipping costs (it's gonna be stupid high!). I am asking $1200 or best reasonable offer. I've heard folks say the max length of the stitches is an indication of wear and if these machines need an overhaul. This one currently maxes out at 7SPI. I only ever use it for sewing patches on vests and it does that quite well.
