I have removed the hardtop on my 88 560SL and have found a literally brand new soft top. The windows show the Mercedes emblem and the bars inside the roof shine like new. The canvas is tight and the room was hard to lock into place as the canvas has not been stretched into place.
I know the plastic windows are prone to scratching and I'm sure there's some good lessons on the forum you can share to keep the canvas, rubber and plastic windows in top condition when folded in the stowage compartment.
Any 'best practice' will be gratefully received as I would like to keep my original roof in tip top condition

Also, anyway I should break in the top with getting it wet or avoiding rain?