Roller assembly on bottom rail of sliding glass patio door

Sliding patio doors likely made in 50s. The half that slides(?) has not slid for years and decided to fix finally. After removing door, I found this single skeleton of one assembly. No wheel(s) on it and there was no assembly at all on other side. It's so old I can't find replacement anywhere - saw your ad. Pictures attached. Dimensions: 3 1/2" long, 1" in height. Thickness from wider to thinner is 5/8" to 3/8". This door has drug this piece around for 20-30 years so it may not look much like what it used to! Can y'all help me replace these. The screw holding it in place is 3" long and roughly 3/16" dia. I'll need 6 of those

Andy

I now have a big plastic-taped up hole separating us from the outside. I really need these asap if you can. If these can't be found I'm not opposed to replacing the entire bottom rail on the door. It's 1 3/4"wide and 37" long. If that turns out to be the best answer I can get pics of the track the door slides on and the connection configuration of the frame corners.