The only reason it is treasured is because it is old and good. It was probably published in 1909, but there is no date inscribed, so I can’t be certain. Now, old books are not really anything special. I have a lot of old books, and some even older than this volume. But old and good is nice, and “A Christmas Carol” is good. I might even call it transcendent. I sometimes think it would be nice for some of the straw we call art to continue on into eternity, as being valuable expressions of truth or beauty. I would nominate “A Christmas Carol” on both accounts.
If you haven’t read this story, do yourself the favor. There are many good (and not so good) adaptations f it, but you should have read it at least once.