I have quite a bit of old minecraft worlds lying around. With the new launcher, I understand I can create profiles for older versions of minecraft, give them their own folders, and copy the saves over to these.
I don't want to load a save with a newer version than it was made. That usually gives ugly boundaries in world gen, or flips doors, or break things in other ways. I understand loading a newer world with an older version is even more likely to break things.
I do of course make backups, but I don't want to try every version of Minecraft for every save that I have. Is there a quick way I can find out which version of Minecraft a world was originally created in and/or last saved in?