Nope. Welcome to 1984.
Your disk is correct for any 64K ROM Mac. A 512Ke tour disk would have a 1986 copyright date.
So clicking "Let me Use My Macintosh" doesn't do anything? Most likely as I said someone has renamed the Finder, or trashed some files while playing around with it. Check out the pictures I linked to and see if your MGT desktop looks like those.