When Universal Studios released “Charade” in 1963, it did not contain a proper copyright notice. The film immediately entered public domain. Many companies have produced copies of the film, some from damaged theatrical prints. The Universal-authorized, highest quality transfer, is reportedly from the Criterion Collection. The DVD I received was produced by Universal, and is a very good (but not perfect) transfer. Amazon groups the reviews from all the manufacturers together, so be aware that there is a wide range of quality in the listings.