The stand is original. I have a nearly identical model save for the pop up speaker (I was wondering what that thing on top of the set in the Sam's was).
I bought mine for 50$ at a junk shop in Tn on a trip. It was the second set I ever bought and my first sucessful restoration. There were tons of odd little things that if I had known about going in would have saved tons of time and head banging.
Mine had a vertically shrunken raster, and week sound, but no video.
Along with a slew of dud tubes the video detector had a cold solder joint which caused the video and audio trouble. After that I had to deal with the vertical running at double frequency which I believe was caused by sams having two different values listed for one of the vertical caps (the value in the parts list was off from the schematic listed value by a factor of 10). I say I believe cause I don't know what was in there originally, and solved the problem by tweaking a resistor value.
I may be able to scan the sam's and the instruction manual (both were acquired after getting the set) if you want.
Good luck restoring yours.
I'll do my best to answer your questions on it.
Tom C.