Sixty or more years ago films with similar names may have indeed been similar. However, as applications changed and technology advanced the films also changed to satisfy customer needs. To learn about the film only concern your self with data generated on that specific film code 2405. Trademark names can be used on different products, the film codes are usually the best identifier. I say usually because some film codes can be reassigned after 10 year or longer period of not being used.

Bob
Author of: http://makingkodakfilm.com