I have an old outer cleaning kit (red-orange metal box) and a sear roebuck gun cleaning kit in a red metal case with cleaning solution in glass bottles. They are similar to the Marlin kit (different logos). Back in the days, that's how cleaning kits were sold. I've used it, but now I just keep it as a souvenir as I have accumulated newer cleaning supplies.
Because these cleaning kits aren't made like this anymore, some have become a collector's piece and sellers are asking top dollar for them.